Mercedes-Benz Vehicle Models Mercedes E-Class 2017-present Torque Specifications
Mercedes-Benz Vehicle Models Mercedes E-Class 2017-present

Mercedes-Benz Vehicle Models Mercedes E-Class 2017-present Torque Specifications

Complete Mercedes-Benz Vehicle Models Mercedes E-Class 2017-present torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

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Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

2.0l I4 Engine

Torque specifications for 2.0L-I4 Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.25
Torque Specification
1. 18 ft-lbs (24 N·m) 2. 90°
Important Notes
Follow the manufacturer's specified torque sequence for the cylinder head bolts to ensure even clamping force.
2

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the rocker arms are properly aligned before tightening.

Crankshaft And Bearings

1

Main Bearing Bolts

M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Follow the specified torque sequence to ensure even clamping force.
2

Connecting Rod Nuts

M8 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure the connecting rods are properly aligned before tightening.

Flywheel And Clutch

1

Flywheel Bolts

M10 x 1.25
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Use thread locker on the flywheel bolts to prevent loosening.

Oil System

1

Oil Pan Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Use a new gasket and ensure the oil pan surface is clean before installation.
2

Oil Drain Plug Bolt

M14 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Replace the crush washer to prevent leaks.

Valve Cover

1

Valve Cover Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Use a new gasket and ensure the valve cover surface is clean before installation.

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2

Camshaft Sprocket Bolt

M12 x 1.25
Torque Specification
63 ft-lbs (86 N·m)
Important Notes
Use thread locker to prevent loosening.

3.0l I6 Engine

Torque specifications for 3.0L-I6 Engine

Cylinder Head and Valve Train

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
2

Valve Cover Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (9 N·m)
3

Rocker Arms/Shafts Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)

Engine Block and Bearings

1

Main Bearing Bolts

M14 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
2

Engine Block to Transmission Mounting Bolts

M12 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value, consult manufacturer's specifications for correct torque value.
3

Engine Block to Engine Mounting Bolts

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value, consult manufacturer's specifications for correct torque value.

Crankshaft and Connecting Rods

1

Connecting Rod Nuts

M12 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Specification
74 ft-lbs (100 N·m)

Intake and Exhaust Systems

1

Intake Manifold Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Exhaust Manifold/Headers Bolts

M12 x 1.5
Torque Specification
26 ft-lbs (35 N·m)

Fuel and Ignition Systems

1

Fuel Rail Bolts

M8 x 1.25
Torque Specification
8 ft-lbs (11 N·m)
2

Fuel Injector Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
3

Spark Plugs

M14 x 1.25
Torque Specification
15 ft-lbs (20 N·m)

Cooling System

1

Water Pump Bolts

M10 x 1.5
Torque Specification
8 ft-lbs (11 N·m)
2

Thermostat Housing Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (9 N·m)

9g Tronic Transmission

Torque specifications for 9g Tronic Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.5
Torque Specification
48 ft-lbs (65 N·m)

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M8 x 1.25
Torque Specification
8 ft-lbs (11 N·m)

Transmission Fluid Drain and Fill

1

Transmission Drain and Fill Plugs

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2

Transmission Fluid Drain/Fill Plug

M12 x 1.5
Torque Specification
25 ft-lbs (34 N·m)

9G Tronic Transmission Case

1

9G-Tronic Transmission Case Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on general industry standards.

9G Tronic Transmission Valve Body

1

9G-Tronic Transmission Valve Body Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on general industry standards.

9G Tronic Transmission Solenoid Pack

1

9G-Tronic Transmission Solenoid Pack Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on general industry standards.

9G Tronic Transmission Filter

1

9G-Tronic Transmission Filter Bolts

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on general industry standards.

Body

Torque specifications for Body

Suspension and Steering

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
52 ft-lbs (70 N·m)
2

Control Arm Bolts

M16 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
3

Steering Gear/Rack Bolts

M12 x 1.25
Torque Specification
74 ft-lbs (100 N·m)

Brake System

1

Brake Caliper Bolts

M14 x 1.5
Torque Specification
79 ft-lbs (107 N·m)
2

Brake Caliper Mounting Bracket Bolts

M16 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
3

Brake Disc/Drum Retaining Bolts

M12 x 1.25
Torque Specification
80 ft-lbs (109 N·m)

Wheels and Hubs

1

Wheel Lug Nuts

M14 x 1.5
Torque Specification
96 ft-lbs (130 N·m)

Body and Frame

1

Body Mounting Bolts

M12 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. May vary depending on specific location and type of bolt.
2

Door Hinge Bolts

M10 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value. May vary depending on specific location and type of bolt.
3

Hood Hinge Bolts

M10 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value. May vary depending on specific location and type of bolt.
4

Trunk Lid Hinge Bolts

M10 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value. May vary depending on specific location and type of bolt.
5

Bumper Mounting Bolts

M12 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. May vary depending on specific location and type of bolt.

Brakes

Torque specifications for Brakes

Brake Caliper

1

Brake Caliper Bolts

M12 x 1.5
Torque Specification
79 ft-lbs (107 N·m)
Important Notes
Ensure proper alignment of the caliper during installation.
2

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
Important Notes
Ensure the bracket is properly seated before torquing.

Brake Rotor Drum

1

Brake Disc/Drum Retaining Bolts

M10 x 1.25
Torque Specification
80 ft-lbs (109 N·m)
Important Notes
Ensure the rotor or drum is properly seated on the hub.

Brake Hydraulics

1

Brake Hose Banjo Bolt

M10 x 1.0
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Use new sealing washers to prevent leaks.
2

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the master cylinder is properly aligned with the brake booster.

Brake Pedal

1

Brake Pedal Assembly Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the pedal operates smoothly after installation.

Abs System

1

ABS Sensor Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure the sensor is properly aligned with the tone ring.

Wheel Assembly

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
96 ft-lbs (130 N·m)
Important Notes
Use a star pattern to ensure even clamping force.

Drivetrain

Torque specifications for Drivetrain

Engine Block

1

Main Bearing Bolts

M14 x 1.5
Torque Specification
59 ft-lbs (80 N·m)

Connecting Rods

1

Connecting Rod Nuts

M10 x 1.25
Torque Specification
30 ft-lbs (41 N·m)

Crankshaft

1

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Specification
74 ft-lbs (100 N·m)

Flywheel

1

Flywheel Bolts

M12 x 1.25
Torque Specification
44 ft-lbs (60 N·m)

Transmission

1

Transmission Mounting Bolts

M14 x 1.5
Torque Specification
48 ft-lbs (65 N·m)
2

Transmission Oil Pan Bolts

M8 x 1.25
Torque Specification
8 ft-lbs (11 N·m)

Drive Axle

1

Drive Axle/Half Shaft Bolts

M16 x 1.5
Torque Specification
105 ft-lbs (142 N·m)

Cv Joint

1

CV Joint/Axle Nut

M20 x 1.5
Torque Specification
221 ft-lbs (300 N·m)

Propeller Drive Shaft

1

Propeller/Drive Shaft Bolts

M12 x 1.25
Torque Specification
44 ft-lbs (60 N·m)

Differential

1

Differential Drain/Fill Plug

M12 x 1.25
Torque Specification
37 ft-lbs (50 N·m)

Engine Block To Transmission Bellhousing

1

Engine Block to Transmission Bellhousing Bolts

M14 x 1.5
Torque Specification
1. 70 ft-lbs (95 N·m) 2. 80 ft-lbs (110 N·m)
Important Notes
Estimated values. Consult the vehicle manufacturer's recommendations or a reliable repair manual for accurate information.

Transmission Crossmember

1

Transmission Crossmember Bolts

M12 x 1.25
Torque Specification
1. 50 ft-lbs (68 N·m) 2. 60 ft-lbs (82 N·m)
Important Notes
Estimated values. Consult the vehicle manufacturer's recommendations or a reliable repair manual for accurate information.

Differential Cover

1

Differential Cover Bolts

M10 x 1.25
Torque Specification
1. 30 ft-lbs (41 N·m) 2. 40 ft-lbs (55 N·m)
Important Notes
Estimated values. Consult the vehicle manufacturer's recommendations or a reliable repair manual for accurate information.

Axle Shaft To Hub

1

Axle Shaft to Hub Bolts

M14 x 1.5
Torque Specification
1. 80 ft-lbs (109 N·m) 2. 100 ft-lbs (136 N·m)
Important Notes
Estimated values. Consult the vehicle manufacturer's recommendations or a reliable repair manual for accurate information.

Electrical

Torque specifications for Electrical

Alternator System

1

Alternator Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure alternator is properly aligned before tightening.

Battery System

1

Battery Terminal Nuts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Avoid over-tightening to prevent damage to the battery terminals.

Starter System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure starter motor is properly aligned before tightening.

Ignition System

1

Ignition Coil Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure the ignition coil is seated properly before tightening.

Grounding System

1

Electrical Grounding Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on similar grounding bolt specifications.

Wiring Harness System

1

Wiring Harness Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value based on similar wiring harness bolt specifications.

Ecu System

1

ECU Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the ECU is properly seated before tightening.

Emissions Sensors

Torque specifications for Emissions_sensors

EGR System

1

EGR Valve Bolts

M10 x 1.5
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Proper torque of the EGR valve bolts ensures a secure connection and prevents leaks, which can affect the performance of the emissions control system.

Exhaust Manifold And Headers

1

Exhaust Manifold/Headers Bolts

M12 x 1.75
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Proper torque of the exhaust manifold and headers bolts ensures a secure connection and prevents leaks, which can affect the performance of the emissions control system.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M12 x 1.75
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Proper torque of the bolts connecting the catalytic converter to the exhaust pipe ensures a secure connection and prevents leaks, which can affect the performance of the emissions control system.

Oxygen Sensor

1

Oxygen Sensor Bolts

M8 x 1.25
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Estimated torque value based on industry standards. Proper torque of the oxygen sensor bolts ensures a secure connection and prevents damage to the sensor.

NOx Sensor

1

NOx Sensor Bolts

M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated torque value based on industry standards. Proper torque of the NOx sensor bolts ensures a secure connection and prevents damage to the sensor.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold Headers

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.

Exhaust Pipe Connections

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure gaskets are properly seated before tightening.
2

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure gaskets are properly seated before tightening.
3

Muffler to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure gaskets are properly seated before tightening.

Heat Shield And Hangers

1

Exhaust Heat Shield Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on typical heat shield bolt sizes.
2

Exhaust Hanger Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on typical hanger bolt sizes.

Oxygen Sensor

1

Oxygen Sensor (O2 Sensor) Mounting Bolts

M12 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure the sensor is properly aligned before tightening.

Exhaust Flanges

1

Exhaust Flange Bolts

M10 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure gaskets are properly seated before tightening.

Fuel

Torque specifications for Fuel

Fuel Delivery System

1

Fuel Rail Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure proper seal to prevent fuel leaks.
2

Fuel Injector Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure proper seal to prevent fuel leaks and ensure optimal fuel delivery.
3

High-Pressure Fuel Line Fittings

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar high-pressure fittings. Ensure secure connection to prevent fuel leaks.

Fuel Storage System

1

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure the fuel tank is securely mounted to prevent movement or detachment.
2

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure a tight seal to prevent fuel vapors from escaping.
3

Fuel Tank Sender Unit Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure a tight seal to prevent fuel leaks and ensure accurate fuel level readings.

Fuel Filtration System

1

Fuel Filter Bolt/Nut

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure the fuel filter is tightly sealed to prevent fuel leaks.

Fuel Regulation System

1

Fuel Pressure Regulator Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value based on similar components. Ensure secure mounting to maintain consistent fuel pressure.

Fuel Line Management

1

Fuel Line Clamp Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure fuel lines are securely held in place to prevent movement or wear.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the compressor is properly aligned before tightening. Torque in a crisscross pattern.

Ac Lines

1

A/C Line Fittings

M8 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure fittings are clean and free of debris before tightening.

Cooling System

1

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure the housing gasket is properly seated before tightening.
2

Water Pump Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure the water pump gasket is properly seated before tightening.

Heater Core

1

Heater Core Inlet/Outlet Pipe Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on typical heater core pipe bolt specifications.
2

Heater Core Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value based on typical heater core mounting bolt specifications.

Blower Motor

1

Blower Motor Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value based on typical blower motor housing bolt specifications.

Evaporator

1

Evaporator Core Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value based on typical evaporator housing bolt specifications.

Condenser

1

Condenser Mounting Bolts

M8 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the condenser is properly aligned before tightening.

Suspension

Torque specifications for Suspension

Strut and Shock Absorber Mounting

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Proper torque is essential to prevent damage to the strut or shock absorber and maintain ride quality.

Control Arm and Steering

1

Control Arm Bolts

M16 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Proper torque ensures the control arms are securely attached, maintaining proper suspension geometry and preventing damage.
2

Ball Joint Nut

M12 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Proper torque is crucial to prevent damage to the ball joint and maintain proper suspension alignment.
3

Tie Rod End Nut

M10 x 1.25
Torque Specification
48 ft-lbs (65 N·m)
Important Notes
Proper torque ensures the tie rod end is securely attached, maintaining proper steering alignment and preventing damage.
4

Steering Knuckle Bolts

M14 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Proper torque is crucial to prevent damage to the steering knuckle and maintain proper steering alignment.

Sway Bar and Coil Spring

1

Sway Bar Link Nut

M12 x 1.25
Torque Specification
41 ft-lbs (55 N·m)
Important Notes
Proper torque ensures the sway bar link is securely attached, maintaining proper suspension stability and preventing damage.
2

Coil Spring Mounting Bolts

M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Proper torque ensures the coil spring is securely attached, maintaining proper ride quality and preventing damage.

Upper and Lower Control Arm

1

Upper Control Arm Bushing Bolts

M12 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Proper torque is essential to prevent damage to the bushings and maintain proper suspension alignment.
2

Lower Control Arm Bolts

M16 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Proper torque ensures the lower control arm is securely attached, maintaining proper suspension geometry and preventing damage.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the torque specifications for the lug nuts on a 2017-Present Mercedes e-class?

120 ft-lbs (163 Nm)

Q2

What IS the recommended torque for the oil drain plug on a 2017-Present Mercedes e-class?

25 ft-lbs (34 Nm)

Q3

What IS the torque spec for the spark plugs on a 2017-Present Mercedes e-class?

18 ft-lbs (24 Nm)

Q4

What type of torque wrench should I use for critical bolts on my 2017-Present Mercedes e-class?

A calibrated click-type torque wrench IS recommended for precise torque application.

Q5

IS it necessary to re-torque the lug nuts after driving a certain distance?

Yes, it IS recommended to re-torque the lug nuts after approximately 50-100 miles (80-160 km) of driving.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Mercedes-Benz Torque Wrench Set: Part Number (A 119 589 01 04)

The official torque wrench set designed specifically for Mercedes-Benz vehicles, ensuring accurate and consistent torque application.

  • Precision-calibrated to meet Mercedes-Benz specifications
  • Range of sockets and attachments for various applications
  • Ergonomic design for comfortable use
  • Includes a protective carrying case
Learn more

Digital Angle Torque Adapter

Advanced tool combining a digital torque wrench and an angle gauge for precise tightening sequences. Ideal for critical components that require precise torque and angle specification.

  • Accurate torque and angle measurements
  • High-resolution display for easy reading
  • Preset memory for frequently used specifications
  • Compact design for confined spaces
Learn more
Service Procedures

Bolt Torque Specifications for Mercedes e-Class (2017-Present)

Comprehensive procedure outlining all key bolt torque specifications for various components on the e-Class.

  • Step-by-step guide with detailed torque values for engine, suspension, body, and more.
  • Organized by component and assembly for easy navigation.
  • Includes safety precautions and recommended tightening techniques.
View full procedure

Torque Sequence for Cylinder Head Bolts

Specific procedure for properly torquing the cylinder head bolts on the e-Class engine.

  • Precise torque values and tightening sequence to prevent head gasket failure.
  • Special considerations for aluminum cylinder heads.
  • Recommended use of a torque angle wrench.
View full procedure
Technical Service Bulletins

Technical Service Bulletin: Updated Torque Specifications for Front Suspension Components

2020-07-15

Official bulletin from Mercedes-Benz revising torque specifications for certain front suspension components.

2017-Present e-Class

Resolution: Reissued torque values for control arms, ball joints, and stabilizer links to address potential premature wear or failure.

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Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
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About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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