Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
12 12 011 Replacing all spark plugs
Special Tools Required:
- 12 1 171
- 12 1 200
- M52/M52TU/M54/M56
- S52/S50US
Necessary Preliminary Tasks:
- Remove ignition coils. See 12 13 511 Replacing ignition coil (M52, M52TU, S52, S50US, M54)
Unscrew and remove spark plugs with special tool 12 1 171 in conjunction with special tool 12 1 200. See 12 12 011 Replacing all spark plugs
Installation:
If special tool 12 1 200 is not used, Tightening torque: M12x1.25 23 +/- 3 N.m and for M14x1.25 30 +/- 3 N.m.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.