Programmed repair - Tempomat/cruise control - RA3000124PR00X

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

30 Throttle control, Tempomat/cruise control

30-86012

Electrical Tempomat: changes in speed (sawing) of approx. 2-3 km/h at intervals of 3-4 s. The range of 50-80 km/h is concerned.

Engine 103

10/86 Part no. revised.

Cause

Shape of gate lever.

Remedy

Install new gate lever part no. 103 070 28 21 Production breakpoint unspecified: as of approx.

Nov 85.

Fig 1: Identifying 1St Version And 2Nd Version

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

30 Throttle control, Tempomat/cruise control

30-86041

Electric Tempomat/cruise control can only be engaged from approx. 60 km/h.

Models 124.125/130 up to approx. July 85

Cause

Incorrect combination of auxiliary harness/control unit.

Remedy

Check whether socket 14 is fitted in the coupling of the Tempomat control unit.

If socket 14 is fitted, control unit part no. 003 545 86 32.

If socket 14 is missing, install control unit part no. 004 545 24 32.

30 Throttle control, Tempomat/cruise control

30-88081

Vehicle shakes in Tempomat/cruise control mode.

Models 124.133/193/333/393

Cause

Switching instant of boost pressure cut-out microswitch shifted due to incorrect throttle control adjustment.

Remedy

Adjust throttle control.

30 Throttle control, Tempomat/cruise control

30-89061

Vehicle shakes when Tempomat switch is held in the "decelerate" position.

Engines 102.96/98 and 103 without ASR

Remedy

Adjust connecting rod of throttle control actuator approx. 2-3 mm or 2-3 rotations shorter.

30 Throttle control, Tempomat/cruise control

30-89101

Vehicle runs approximately 10 km/h above the set speed, shaking can also occur at higher speed. Vehicles (without ASR) with Tempomat/cruise control as of approx. Jan 89

Oct 90 Remedy revised

Vehicles with reference resistor on Tempomat control unit are concerned.

Cause

Transition resistance at the plug pins for the reference resistor.

Remedy

Remove black rubber seal between control unit and reference resistor and install a new gray rubber seal.

Request parts from VP/PPT4.

Production breakpoint

Control unit with modified rubber seal (gray): Dec 89.