When 1st starting car the front wiper makes 1 sweep and stops with the stalk control in the off position.(or 2nd position). When raining out the wiper will come on and make various numbers of sweeps and will not stop when windshield is dry, with the control off. All this with the control in the OFF position. When in the 2nd position the wiper used to stop after sweeping and drying the windshield. The 3rd and 4th position work as they should.
Is this the control module or rain sensor? If ECM what is the location?
Thanks- I searched the treads and could not find any info.
2000 4 matic wagon 154K.

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