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Home >> Mercedes Benz >> 2005 >> S430 Base >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Electrical System -- Basic Knowledge -- 215 & 220 Chassis - 1 Of 2 >> Basic Knowledge >> Wiper system automatic speed reduction, function - GF82.30-P-4006S

Wiper system automatic speed reduction, function - GF82.30-P-4006S

Models 215, 220 

The automatic speed reduction has an effect on the functions (valid as of 1.9.02):

If the vehicle speed drops below 5 km/h, then the left front SAM control module (N10/6) switches the wiper motor (M6/1) from these functions back to intermittent wiping. The intermittent pause is controlled in this case by the rain/light sensor (B38/2).

Switching back to the selected wiper stage (valid until 31.8.02) 

If with increasing vehicle speed the value of 8 km/h is exceeded, the left front SAM control module (N10/6) switches the wiper motor (M6/1) automatically back again to the wiper stage ("1" or "2") set at the combination switch (S4).

The speed reduction can be reset manually by pressing the combination switch (S4) again for each desired function.

Switching back to the selected wiper stage (valid as of 1.9.02) 

If a rain/light sensor (B38/2) is provided, the system always switches back to rain sensor mode. For this purpose, the rain/light sensor (B38/2) must be activated and "circuit 15 ON". If the rain/light sensor (B38/2) is present but defective, the standard way of switching back (switching back one stage) is carried out.

IMPORTANT The vehicle speed signal required for the speed reduction is received at the left front SAM control module (N10/6) via the interior compartment CAN from the instrument cluster (A1).

IMPORTANT Instantaneous status: v-back-switching not in USA.

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