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 14 524 Replacing pulse generator for exhaust camshaft (S62)
Interrogate fault memory of DME control unit.
Switch off ignition.
The instructions apply to removing and installing both pulse generators for the left and right exhaust camshafts.
Illustrations show removal of the left pulse generator for exhaust camshaft.
Installation location is at rear of cylinder head.
E39 Only:
Release retaining clips (1).
Carefully twist air duct (2) upwards until it is no longer locked in firewall. Pull air duct (2) forwards and remove towards top.
E39 And E52:
For a better overview, the following work steps are shown on an engine that has been removed.
Disconnect plug connection (1).
Release screw (2).
Remove pulse generator for exhaust camshaft (3).
Installation:
Check seal (1) of pulse generator, replace if necessary.
NO RELATED
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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.