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 14 522 Replacing pulse sensor on left intake camshaft (S63 B44 T 0)
(cylinder bank 5 to 8)
Necessary preliminary tasks:
- Read out fault memory of the DME control unit, work through test plans if necessary.
- Switch off ignition.
- Remove left INTAKE FILTER HOUSING
Partially release wiring harness if necessary.
Unlock connector (1) and remove.
Release screw (2).
Tightening torque 13 62 3AZ .
Remove pulse generator (3).
Installation note:
Replace sealing ring and coat with lubricant.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.