Variable Speed Limiter, function - GF30.30-P-3001GZ

ENGINE 113, 156, 272, 629, 642 in MODEL 164.1 with CODE (219) Distronic (DTR)

ENGINE 273, 629, 642 in MODEL 164.8 with code (219) Distronic (DTR)

ENGINE 113, 156, 272, 642 in MODEL 251 with CODE (219) Distronic (DTR)

Variable Speed Limiter activated

Fig 1: Variable Speed Limiter, Function Diagram

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The Variable Speed Limiter (also known as the Limiter) is an additional function of DISTRONIC and is integrated in the ESP control unit (N47-5).

The variable speed limiter enables the driver to set a maximum speed himself ranging from 30 km/h up to the maximum vehicle speed. If the vehicle approaches the set maximum speed, the set maximum speed is maintained by engine intervention and if necessary by intervention by the brake system.

The CC [TPM] switch can be moved up or down (S40/4 or S40 for ) to increase or decrease the maximum speed in 1 km/h or 10 km/h increments (two settings).

Function requirements

"Circuit 61 ON" (engine running)
By pressing the CC [TPM] switch, a switchover must place from the DISTRONIC position to the Variable Speed Limiter position.
The LIM indicator lamp in the CC [TPM] switch lights up.

By pressing the CC [TPM] switch, a switchover to the Variable Speed Limiter takes place and DISTRONIC is deactivated simultaneously.

Activation

Pulling or moving the CC [TPM] switch up or down will activate the Variable Speed Limiter.

By up the CC [TPM] switch, the Variable Speed Limiter is activated with the last saved target speed provided that a target speed has already been saved since the last engine start (set). If no target speed is stored, the current vehicle speed is set as the target speed.
By moving the CC [TPM] switch up or down, the Variable Speed Limiter is activated with the current vehicle speed as the target speed.
By moving the Cruise control switch upwards with the vehicle at a standstill the Variable Speed Limiter is activated at the minimum settable nominal speed of 30 km/h.

If the Variable Speed Limiter is activated then the segment in the tachometer annulus is lit from the beginning of the scale until the set maximum speed and the LIM indicator lamp lights up in the Cruise control switch.

Deactivation

The Variable Speed Limiter is deactivated if:

The CC [TPM] switch is pushed forwards
By pressing the CC [TPM] switch, a switchover to the DISTRONIC position takes place (LIM indicator lamp off)
Kickdown is triggered (accelerator pedal depression >90 %) and the driven speed is more than 20 km/h from the set maximum speed

The Variable Speed Limiter and Permanent Speed Limiter have the sales designation "SPEEDTRONIC".

	Component description for the CC [TPM] switch	S40 at	GF30.20-P-2100GR
	Component description for the CC [TPM] switch	S40/4 except	GF30.20-P-2100GT