When Mecedes dealers replace defective electric window switches under warranty do they replace single switches or do they replace the whole switch panel? I ask because according to the warranty record on the used ML320 I puchased last week the vehicle has been in the shop for window switch replacement at 24K and 34K miles. I'm wondering if these switches die every 10K miles.

Thanks,

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Slowdriver

2000 ML320 (37K Mi)
1985 BMW 735i (155K Mi)
1989 Caravan (102K Mi) cargo hauler
2000 Montana (40K Mi) family hauler