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Old 04-28-2009, 12:23 PM
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drivers side window stopped working...i can hear clicking in the door 99 e300

well I let my brother borrow my car yesterday and he gave it back today and asked why my window stopped working....It had worked flawlessly up until he got the car.

The window doesnt go down at all and when I push the button I hear a clicking in the door but the window doesnt move...anyone know how to fix it?
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Old 04-28-2009, 12:28 PM
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Don't let your brother borrow your car anymore . . . .
" The market, like the Lord, helps those who help themselves. But, unlike the Lord, the market does not forgive those who know not what they do."- Warren Buffett

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1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
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Old 04-28-2009, 01:24 PM
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well i took the door panel off and this is where the clicking is coming from, the motor has zero power going to it, this box just clicks when i touch the window switch

it has connection that go to the seat adjuster, the window, and other stuff. Not sure what it is? I looked up the part number online and it just says its a control unit.

Last edited by darkostoj; 04-28-2009 at 01:30 PM.
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Old 04-28-2009, 03:33 PM
F18 F18 is offline
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It is possible that the relay has quit working........but double check the condition of the window linkage before you burn up another one. Make sure the linkage is not bent, broke or jammed. The driver side door takes the most pounding.

Daily Driver: 98 E300TD 199K
Hobby Car: 69 Austin Mini
Past Diesels: 84 300SD, 312K
87 300SDL, 251K
94 Chev. K-1500 6.5Ltr.TD, 373K
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Old 04-29-2009, 12:43 PM
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anyone else?
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Old 04-29-2009, 01:10 PM
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A problem binding up the Window Motor could also cause the Relay to click.

I have not done this on Mercedes but for test purposes I have pulled the electrical connector from the motor and bypassed the window relay with jumper wires directly to the window motor itself on a Chevy. This was to see if the motor was working.

If each window has the same Relay you could swap a good one for the suspected one and see if the Window Works. This might tell you if it is a bad Relay.

It is also a good Idea to make sure everthing is grounded well and also check the fuses to see if the Tips of the fuses (if you have the ceramic type fuses) are burned or eroded (this happend to me but I had 2 windows diagonally from each other stop working; your newer model may be wired diffrently).
84 300D, 82 Volvo 244Gl Diesel
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