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.
13 41 555 Replacing Both Idle Speed Actuators (S85)
Necessary preliminary tasks:
- Read out fault memory of DME control unit
- Check stored fault messages
- Switch off ignition
- Remove intake air manifold. See 11 61 050 REMOVING AND INSTALLING AIR INTAKE MANIFOLD (S85) .
Release bolt on cable duct (1).
Release nut on cable duct (1).
Tighten to specified torque, see 12 52 3AZ in 52 CONNECTORS, PLUGS .
Unlock plug in V-chamber and disconnect, lay cable duct (1) to one side.
Release clamp (1) and detach hose from idle speed actuator (2).
Tighten to specified torque, see 13 41 2AZ in 41 STARTER WITH MOUNTING
Unscrew nuts.
Tighten to specified torque, see 13 41 1AZ in 41 STARTER WITH MOUNTING .
Pull idle speed actuator (2) in direction of arrow out of cylinder head.
Installation:
Replace sealing ring (1).
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.