Mercedes recalls 310,667 cars and SUVs in US over potentially faulty door microswitches. Corrosion can prevent automatic parking safeguards engaging when drivers open a door. Wide range of models affected, including A-Class, B-Class, CLA, C-Class, GLA, GLB, GLC. Sharing components across a sprawling model range can save automakers a fortune, but it can also turn one dodgy little part into a very big headache. Mercedes reminded us of that this month by recalling 310,667 vehicles in the US because a faulty driver’s door switch could potentially let them roll away after occupants get out. The culprit is a microswitch inside the driver’s door lock. Mercedes says a supplier development error resulted in some switches receiving housing material that might allow moisture through under certain climatic conditions. Given enough time, that moisture can cause corrosion and eventually kill the switch. Related: Mercedes Dealer Said Extended Test Dri...