GF82.30-P-3001GK Rear Intermittent Wipe - Function

GF82.30-P-3001GK Rear Intermittent Wipe - Function
- as of 1.9.00

The rear intermittent wipe function is linked, among other things, to the operation of the windshield wiper system. It will therefore be described in relation to the position of the combination switch (S4):

Combination switch (S4) position: OFF
The rear wiper from KI. 15R: ON by operating the rear is powered wiper/washer switch (S78). Switching on the wiper illuminates the LED immediately on the rear wiper/washer switch (S78) and causes the wiper arm to perform one complete sweep before switching to intermittent wiping.
When the vehicle is traveling at speeds of
- less than 100 km/h the wipe interval is 10 seconds
- of 100 km/h or more the wipe interval is 5 seconds.
The wiper is turned off by reactivating the wiper/washer switch.

Combination switch (S4) position: Wiper speed 1 or 2
- The rear wiper is activated from KI. 15R: ON using the rear wiper/washer switch (S78).
Switching on the wiper illuminates the LED on the rear wiper/ washer switch (S78) and immediately causes the wiper arm to perform one complete sweep before switching to intermittent wiping. The wipe interval is 5 seconds.
The wiper is turned off by reactivating the wiper/washer switch.
- The rear wiper switches on automatically from KI. 15R: ON
when reverse gear is engaged. The wiper operates continuously without delays until reverse gear is disengaged. Note: The LED on the rear wiper/washer switch (S78) does not illuminate when vehicle is in reverse gear.

Combination switch (S4) position: Intermittent
When the combination switch (S4) is in the Intermittent position, we must differentiate between vehicles with and without rain sensors (code 345a) when describing the rear wiper function.

No rain sensor (no code 345a)
The rear intermittent wipe function is activated as follows:
- By engaging reverse gear; from KI. 15: ON. The wiper arm immediately performs one complete sweep.
Then the rear wiper switches to intermittent wiping at a frequency half that of the front windshield wiper until the vehicle is put into neutral or another gear.
Note: The LED not on the rear wiper/washer switch (S78) does illuminate when the vehicle is in reverse gear.

- By activating the rear wiper/washer switch (S78); from KI. 15R:
ON. Switching on the wiper illuminates the LED on the rear wiper/ washer switch (S78) and immediately causes the wiper arm to perform one complete sweep. Then the rear wiper switches to intermittent wiping at a frequency half that of the front windshield wiper.The wiper is turned off by reactivating the wiper/washer switch.
The start of each wipe cycle is synchronized with the front wiper system.

With rain sensor (with code 345a)
The rear intermittent wipe function is activated as follows:
- By engaging reverse gear; from KI. 15: ON. The wiper arm immediately performs one complete sweep. Then the rear wiper switches to intermittent wiping at a frequency equal to that of the front windshield wiper until the vehicle is put into neutral or another gear.

Note: The LED not on the rear wiper/washer switch (S78) does illuminate when the vehicle is in reverse gear.

- By activating the rear wiper/washer switch (S78); from KI. 15: LED ON. Switching on the wiper illuminates the on the rear wiper/washer switch (S78) and immediately causes the wiper arm to perform one complete sweep before switching to intermittent wiping. The frequency is linked to the frequency of the front windshield wiper and is thus controlled by the rain (B38)sensor.
The actual frequency is also a factor of the vehicle's speed of travel (see chart below).
The wiper is turned off by reactivating the wiper/washer switch.

The start of each wipe cycle is synchronized with the front wiper system.







Networking
Rain sensor (B38) and reverse signals are fed to the All Activity Module (AAM) (N10) via the engine compartment CAN.
The settings of the rear wiper/washer switch (S78) are read directly by the All Activity Module (AAM) (N10).
The tailgate wiper motor unit (M6/4) is controlled directly by the All Activity Module (AAM, N10).

The tailgate wiper motor unit (M6/4) comprises a relay and a cam-operated switch in addition to the actual motor.