Contents: Electronic Control Unit (ECU) ↡ Cruise control actuator ↡ Cruise control switch ↡ Switches on the brake and clutch…↡ Speed sensor ↡
Electronic Control Unit (ECU)
Removal
1. The electronic control unit for the cruise control system is located at the bottom of the instrument panel on the driver's side.
2. Remove the headlight beam adjuster.
3. Remove the ground cable from the battery.
4. Remove the steering wheel.
5. Remove the left and right speakers from the instrument panel.
6. Remove the headlight beam adjuster.
7. Remove the clips and remove the covering located around the pedals.
8. Disconnect the electrical connectors, unscrew the screws and remove the electronic control unit.
Installation
1. Installation is carried out in the reverse order of removal.
Original material on the website mercedesman
Cruise control actuator
Removal
1. The cruise control system actuator is mounted on the side of the cylinder block.
2. On most models, the air cleaner housing must be removed to access the actuator. To further improve actuator access, apply the parking brake, raise the front of the vehicle, and support it on jack stands. Remove the screws and remove the engine splash shield.
3. Remove the ground cable from the battery. Disconnect the actuator electrical connector located on the wiring harness.
4. Using a screwdriver blade, remove the tie rod from the actuator ball joint.
5. Unscrew the nuts securing the actuator bracket to the cylinder block and remove the actuator together with the bracket.
6. If necessary, unscrew the bolts and remove the actuator from the bracket. In doing so, mark the location of the rubber pads and gaskets.
Installation
1. Installation is performed in the reverse order of removal. When installing the actuator, check the condition of the rubber cushions. If necessary, the length of the rod can be adjusted by loosening the lock nut and screwing or unscrewing the ball joint from the rod. After adjusting the length of the rod, tighten the lock nut.
Cruise control switch
The cruise control switch is an integral part of the steering column multi-function switch.
Switches on the brake and clutch pedals
Look subsection 22.17.
Speed sensor
1. The speed sensor is mounted on the rear of the speedometer drive cable.
2. Remove the instrument cluster.
3. Release the retainer and remove the speed sensor from the rear of the speedometer drive cable.
4. Installation is carried out in the reverse order of removal.
