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Rain sensor, location/purpose/design/function - GF82.30-P-4103F

MODEL 129, 140 as of 1.6.96 

MODEL 210 / (except 210.081 /281) up to 31.5.97 with CODE (345a) Rain sensor 

Interlinkage on models 129/140 

Fig 1: Identifying Rain Sensor Interlinkage Components (Model 129/140)
G04636904

Interlinkage on model 210 

Fig 2: Identifying Rain Sensor Interlinkage Components (Model 210)
G04636905
  Rain sensor, location   GF82.30-P-4103-01F
  Rain sensor, purpose The rain sensor (B38) senses the degree of moisture on the windshield. When the switch is set to interval wiping on the combination switch (S4) the rain sensor (B38) controls the interval time.
When the combination switch (S4) is switched on or when circuit 15R is switched on, when the combination switch (S4) is already in the interval position the window is wiped once, even when it is dry.
 
  Rain sensor, function   GF82.30-P-4103-02F