Update. It started working again. Since my last post, I took apart the relay that operates the LR window down function to inspect it and cleaned one side of each contact. It didn't work at first, but later in the day the window started working again, and has been working ever since. I guess the relay wasn't as clean as I thought.
I've posted before that many problems I've had on my E320 (and even other vehicles) have been traced to burned or tarnished contacts (e.g., seat heater module, seat belt presenter module). That's how I got my high beams to work again in March.
Anyhow, I've added CCM maintenance to my list for when my car is idled for the winter. I'll be cleaning ALL contacts, especially since both pairs of front window relays look heavily arced. Thank you everyone for your thoughts.
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95 E320 Cabriolet, 159K
Last edited by Kestas; 07-13-2009 at 09:24 AM.
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