Electronic stability program (ESP), driver information - GF42.45-P-0001-04PP

Model 203, 209

Fig 1: Identifying Electronic Stability Program Driver Information Components (Shown On Model 203)

Shown on model 203

Driver information

Low brake fluid level and parking brake indicator lamp (A1e7)

This lamp is activated if the parking brake is not released when driving or the brake fluid is below the minimum level.

ABS malfunction indicator lamp (A1e17)

This lamp is actuated when there is a fault in the ABS system. The signal for actuating the lamp comes over the engine compartment CAN from the ESP and BAS control module (N47-5)

ESP warning lamp (A1e41)

This lamp is actuated whenever the system intervenes in the driving situation.

The signal for actuating the lamp comes over the engine compartment CAN from the ESP and BAS control module (N47-5).

The driver is alerted to the ESP intervention by the ESP warning lamp (A1e41) in the instrument cluster. The information through the steering wheel and brake pedal reaction is so limited that it does not distract the driver, who is already highly tense on having reached the critical handling limits.

The warning lamp flashes in the event of:

Active intervention by the brake system during acceleration or deceleration
Reduction of engine torque

Reactions in the event of failure of individual components and displays in the instrument cluster (see table below)

Condition 1:

System fully operational

Condition 2:

Fault in ESP, but ASR and ABS still fully operational

Condition 3:

Fault in ASR (of necessity ESP must also be shut down), but ABS still fully operational

Condition 4:

Fault in ABS (of necessity ESP, ASR and BAS must also be shut down), no systems operational

Operating condition	Driving status	ESP OFF switch	ESP warning lamp	ABS indicator lamp	Display
Condition 1	ASR/ESP not active	not actuated	OFF	OFF	OFF
System fully operational		actuated	constantly on	OFF	OFF
	ASR/ESP not active and driver braking	not actuated	OFF	OFF	OFF
	ASR/ESP not active and driver braking	actuated	constantly on	OFF	OFF
	ASR/ESP active	not actuated	flashing	OFF	OFF
	ASR/ESP active and driver braking	not actuated	OFF	OFF	OFF
	ESP active and driver braking	actuated	constantly on	OFF	OFF
Condition 2	During a driving condition in ESP condition 1 with the ESP OFF switch actuated, ESP switches to malfunction	was actuated, is deactivated with ESP indicator lamp/display	was constantly on or flashing, is switched off with ESP indicator lamp/display	OFF	on
Fault in ESP, but ASR and ABS still fully operational	ASR not active	switch is no longer taken into account	OFF	OFF	on
	ASR not active and driver braking	switch is no longer taken into account	OFF	OFF	on
	ASR active	switch is no longer taken into account	off; warning lamps no longer actuated	OFF	on
	ASR active and driver braking	switch is no longer taken into account	OFF	OFF	on
Condition 3	No driving status recognition	-	OFF	OFF	on
ESP/ASR failure
Condition 4	No driving status recognition	-	OFF	on	on
Total failure