AUTODOC CLUB

How to Change Spark Plugs on Mercedes W245

– Replacement Guide

This guide provides step-by-step instructions for changing spark plugs on the Mercedes W245.

Important! This replacement procedure is generally applicable to various Mercedes-Benz models including E-Class (W124, W210), C-Class (W202), and Sprinter (901, 902) variants. Specific steps may vary slightly based on the car's design.

Tools You Need

High-temperature anti-seize lubricant
Spark plug socket #16
Ratchet wrench
Torque wrench
Round-nose pliers
Fender cover

AUTODOC Experts Recommend

The replacement procedure is the same for all spark plugs.
All work should be done with the engine stopped.
Be careful to avoid damaging spark plug wires.
Remember the sequence of the spark plug wire connectors.
Do not tighten the plugs with excessive force. Exceeding tightening torque can damage the thread connection.
Be careful when working with a spark plug wrench. Its skewing can cause damage to the threaded connection.

Recommended Sequence of Steps

Step 1: Open the hood.

Description: Open the vehicle's hood to access the engine compartment.

Step 2: Use a fender protection cover.

Description: Apply a fender protection cover to prevent damage to the car's paintwork and plastic parts.

Step 3: Remove spark plug wire connectors.

Description: Carefully remove the spark plug wire connectors from the spark plug wells using round-nose pliers.

Step 4: Clean spark plug wells.

Description: Clean any dirt, dust, or debris from inside the spark plug wells.

Step 5: Unscrew the spark plugs.

Description: Use the spark plug socket #16 and a ratchet wrench to unscrew the old spark plugs.

Step 6: Take out the spark plugs.

Description: Remove the old spark plugs from their seats.

Step 7: Apply anti-seize lubricant.

Description: Apply a thin layer of high-temperature anti-seize lubricant to the threads of the new spark plugs.

Step 8: Install new spark plugs.

Description: Install the new spark plugs into their mounting seats.

Step 9: Tighten spark plugs.

Description: Screw in the new spark plugs and tighten them using the spark plug socket #16 and a torque wrench. Tighten to 27 Nm torque.

Step 10: Install spark plug wire connectors.

Description: Install the spark plug wire connectors back into the spark plug wells. Ensure you hear a click to confirm they are locked in place.

Step 11: Run the engine.

Description: Start the engine and let it run for a few minutes to ensure the component operates properly.

Step 12: Shut off the engine.

Description: Turn off the engine.

Step 13: Remove fender protection cover.

Description: Remove the fender protection cover.

Step 14: Close the hood.

Description: Close the vehicle's hood.

WELL DONE! ?

VIEW MORE TUTORIALS

ⓘ DISCLAIMER

The document contains only general recommendations that may be useful for you when you perform repair or replacement work. AUTODOC shall not be liable for any loss, injury, damage of property occurring in the repair or replacement process due to incorrect use or misinterpretation of the provided information. AUTODOC shall not be liable for any possible mistakes and uncertainties in this guide. The information provided is for information purposes only and cannot replace advice from specialists. AUTODOC shall not be liable for incorrect or hazardous usage of equipment, tools and car parts. AUTODOC strongly recommends to be careful and observe the safety rules when performing repair or replacement works. Remember: usage of low quality auto parts does not guarantee you the appropriate level of road safety.

© Copyright 2022. All the contents of this website, in particular texts, photographs and graphics, are protected by copyright. All rights, including reproduction, publication, editing and translation rights, are reserved by AUTODOC GmbH.

	How to Change Spark Plugs on a VW Touareg I (7LA, 7L6, 7L7) A step-by-step guide on how to change the spark plugs on a VW Touareg I (7LA, 7L6, 7L7) with a 4.2 V8 engine. This guide provides detailed instructions and lists the necessary tools.
	How to Replace Spark Plugs on Opel Astra G (T98, F08, F48) - Autodoc Guide Step-by-step guide from Autodoc on how to replace spark plugs for Opel Agila, Astra G, and Corsa C models. Includes required tools and detailed instructions.
	How to Change Spark Plugs on a VW Polo Vivo Hatchback: AUTODOC Guide A step-by-step guide from AUTODOC on how to change the spark plugs on a VW Polo Vivo Hatchback. Includes required tools and detailed instructions.
	How to Change Glow Plugs on VW TIGUAN (AD1) - Replacement Guide A comprehensive guide from AUTODOC on replacing glow plugs for the Volkswagen TIGUAN (AD1) models, detailing tools, step-by-step instructions, and expert advice for a successful DIY repair.
	How to Change Front Brake Pads on Mercedes W204: A Step-by-Step Guide by AUTODOC Learn how to replace the front brake pads on your Mercedes-Benz W204 with this comprehensive, easy-to-follow guide from AUTODOC. Includes tools needed and detailed instructions.
	How to Change Spark Plugs on Fiat Panda 169: A Step-by-Step Guide Detailed instructions and recommendations from AUTODOC on how to replace spark plugs in a Fiat Panda 169. Includes tools required and step-by-step guidance for a successful replacement.
	How to Change Glow Plugs on VW Jetta Mk6 (162, 163, AV3, AV2) - Replacement Guide A comprehensive guide from AUTODOC on how to replace glow plugs for the VW Jetta Mk6 (models 162, 163, AV3, AV2) with 1.6 TDI and 2.0 TDI engines. Includes tools needed and step-by-step instructions.
	How to Change Engine Thermostat on PEUGEOT 3008 I (0U_) \| AUTODOC Replacement Guide A comprehensive step-by-step guide from AUTODOC on how to replace the engine thermostat for PEUGEOT 3008 I (0U_) 1.6 VTi. Includes required tools, detailed instructions, and important safety tips.