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How to change spark plugs on MERCEDES-BENZ A-Class (W169) – replacement guide
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Recommended replacement interval for the part category Spark plug : 18 month / 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ A-Class (W169) A 180 (169.032, 169.332), MERCEDES-BENZ A-Class (W169) A 160 (169.031, 169.331), MERCEDES-BENZ A-Class (W169) A 200 (169.033, 169.333), MERCEDES-BENZ A-Class (W169) A 150 (169.031, 169.331), MERCEDES-BENZ A-Class (W169) A 170 (169.032, 169.332) … View more
The steps may slightly vary depending on the car design.
MERCEDES-BENZ A-Class (W169) A 180 (169.032, 169.332), MERCEDES-BENZ A-Class (W169) A 160 (169.031, 169.331), MERCEDES-BENZ A-Class (W169) A 200 (169.033, 169.333), MERCEDES-BENZ A-Class (W169) A 150 (169.031, 169.331), MERCEDES-BENZ A-Class (W169) A 170 (169.032, 169.332) … View more
The steps may slightly vary depending on the car design.
This video shows the replacement procedure of a similar car part on another vehicle
All the parts you need to replace – Spark Plug for A-Class (W169) and other MERCEDES-BENZ models
Spark plug
Alternative products

High-temperature anti-seize lubricant
Drive socket # E11
Drive socket # 16
Ratchet wrench
Torque wrench
Fender cover
Replacement: spark plugs – MERCEDES-BENZ A-CLASS (W169). AUTODOC experts recommend:
- The replacement procedure is the same for all spark plugs.
- All work should be done with the engine stopped.
Replacement: spark plugs – MERCEDES-BENZ A-CLASS (W169). Recommended sequence of steps:
- Step 1Open the hood.Step 2Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.Step 3Detach the connector from the ignition coil.
- Step 4Unscrew the ignition coil bracket. Use a drive socket #E11. Use a ratchet wrench.
- Step 5Take out the ignition coil from the spark plug well.
- Step 6Unscrew the spark plugs. Use the spark plug socket #16. Use a ratchet wrench.
- Step 7Take out the spark plugs.
- Step 8Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs.
- Step 9Install the new spark plugs into their mounting seats.
- Step 10Screw new spark plugs and tighten them. Use the spark plug socket #16. Use a torque wrench. Tighten it to 25 nm torque.Replacement: spark plugs – MERCEDES-BENZ A-CLASS (W169). Professionals recommend:Don't 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.
Comments –
1
- M. H.24.04.2023 15:16MemberThis tutorial is incorrect for a150 w169, there are two coil packs and they are separate from the sparkplugs
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