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.
1999 Mercedes Benz CLK430FACTORY OEM SERVICE PROCEDURE
Removal & Installation
- On E420, S350, S420 and S500, control unit is inside control module box located at left rear of engine compartment. Turn ignition switch to off position. Remove control module box cover. Using Remover (140 589 01 33 00), remove control unit. To install, reverse removal procedure.
- On all other models, control unit is located in engine compartment. Turn ignition off. Push back holding springs. Remove electronic control unit from bracket. Actuate lock. Pull plug from unit. To install, reverse removal procedure. When mounting plug on unit, ensure plug lock can be heard engaging.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no 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.