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Registered
2002 ML(163) 400 CDI, ,, 1986 Citroen 2cv,
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87 Posts
Discussion Starter #1
I cant find any previous posts that address this rather annoying problem.
When I first start the engine, I am unable to operate window switches, roof panel or side mirrors. I have to wait for a period of several minutes before these will function. This is can be a problem if I have left a window down or the roof open and it starts to rain. Also I have driven for over an hour before I could unfold the side mirrors. Has anyone else encountered these problems:crybaby2:?
 

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Registered
2002 ML(163) 400 CDI, ,, 1986 Citroen 2cv,
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87 Posts
Discussion Starter #3
Windows dont operate when car first started

This subject is a bit stale but I will try to reopen it here.
Regarding the referral to the fuse box in the passenger footwell (LHD Cars)
my voltage reading for fuses 24/25 is about 2.5 VDC
According to one post, this should be 12 VDC.
Can anyone confirm the correct voltage.?
 

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Premium Member
02 ML320 06 ML500
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17,104 Posts
You never responded as to whether or not there was corrosion at the window switch, which was 8 months ago.

Fuse #24 controls the rear power windows and #25 controls the front windows.

With the key in pos. #2 and assuming that the windows are closed:

1. Take a voltage reading at both contacts at fuses #24 & #25.

2. While pressing and holding any rear window switch in the down position, take a voltage reading at both contacts on fuse #24.

3. Do the same test for any front window at fuse #25.

Post results. Also let us know whether or not you took apart the window switch to check for corrosion.

 

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Registered
2002 ML(163) 400 CDI, ,, 1986 Citroen 2cv,
Joined
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87 Posts
Discussion Starter #5
Delay in window operation

I apologize for not doing as recommended, but I thought I had it solved.
After replacing the relay, the windows seemed to operate OK. Perhaps this was because I didnt have occasion to open them during the winter months.
However, the problem has returned and I have checked voltages as per
recommendation with the following results.
Fuse 27, forward side of socket 0.0 VDC; aft side, 1.5VDC
Fuse 28, forward side of socket o.o VDC; aft side, 0.4 VDC
I did not check corrosion on switches since they all behave the same, windows, moon roof, etc
I hope this will reopen a sticky wicket.:bowdown::bowdown::bowdown:
 

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Registered
2002 ML(163) 400 CDI, ,, 1986 Citroen 2cv,
Joined
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87 Posts
Discussion Starter #6
Delay in window operation

Sorry the previous applies to fuses 24, 25 not 27 28
 

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2001 ML430 Sport bought in very nice shape despite 156K miles in August 2010
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540 Posts
Were those voltages measured with the related window switch held down as 43sqd described?
 

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Registered
2002 ML(163) 400 CDI, ,, 1986 Citroen 2cv,
Joined
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87 Posts
Discussion Starter #10
Delay in window operation

43sqd
I would like to explain my apparent procrastination in the removal and repair of the switch pack.
1. the delay is relatively short, often only a few minutes. Granted you can get pretty wet in a few minutes if your roof is open.
2. I have been unable to understand why the switches work after this short delay. It would seem to me that if a switch was faulty, contact bent from use, or corroded,etc, they wouldn't consistently suddenly become functional again.
3. There seems to be considerable difference between US built and European built cars. Often the instructions from US users that I see, are not applicable to the ML400 which is not normally found in the US.
4. All the above being said, now that the weather has improved, I will find some time to work on the switch pack. It takes me about an hour-slow computer- to get WIS up and running. WIS doesnt like my VIN nr.

Thanks for your patience.:bowdown::bowdown::bowdown:
 
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