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Old 20-03-2017, 02:29 PM
Sallyday10 Sallyday10 is offline
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Default 2007 ML - Poltergeists!!!

My pal has an ML that has started behaving badly recently.

Problems include alarm triggering apparently by itself, wipers activating by themselves, problems with interior lights, dashboard 'lighting up' and other such intermittent electrical problems.

Any clues?

Is there a control unit for this lot located in the floor pan somewhere?

Do these cars suffer from blocked drain tubes which can lead to water ingress causing damage to circuitry somewhere?

Any help would be much appreciated,

Thanks.
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Old 20-03-2017, 04:33 PM
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Taffy7hfa Taffy7hfa is offline
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Has it been pressure washed/steam cleaned recently? are the carpets damp ? does the glass get steamed up easily?
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Old 20-03-2017, 09:24 PM
Sallyday10 Sallyday10 is offline
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Quote:
Originally Posted by Taffy7hfa View Post
Has it been pressure washed/steam cleaned recently? are the carpets damp ? does the glass get steamed up easily?
None of those, but on the day it all started, it had been raining very heavily.
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Old 21-03-2017, 11:45 AM
Mark A Mark A is offline
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Check in the boot, drivers side access panel. There is a fuse box directly ahead, but the culprit could be the rear SAM (Signal Aquisition Module), which is lower down and sits below the boot floor level. This can get wet through either failure of the seal around the light or the seal on the 3rd brake light.

I had months of problems until the garage believed me and changed the SAM.

The seal is about 20 and the brake light about 60 IIRC.

Mark
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Old 21-03-2017, 02:47 PM
Sallyday10 Sallyday10 is offline
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Quote:
Originally Posted by Mark A View Post
Check in the boot, drivers side access panel. There is a fuse box directly ahead, but the culprit could be the rear SAM (Signal Aquisition Module), which is lower down and sits below the boot floor level. This can get wet through either failure of the seal around the light or the seal on the 3rd brake light.

I had months of problems until the garage believed me and changed the SAM.

The seal is about 20 and the brake light about 60 IIRC.

Mark
Hi Mark,

thanks for the guidance - I'll check the seal around the 3rd, high-level brake light, but what's the other seal you refer to please?

Many thanks once again.
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Old 21-03-2017, 05:33 PM
Mark A Mark A is offline
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Drivers side rear light cluster. There are 2 seals on it. Supplied together.

Pretty simple to change.
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If you can't fix it with a hammer, you've got an electrical problem.
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2005 (55) SLK-350
2008 (08) ML-420 CDI Sport

Last edited by Mark A; 21-03-2017 at 05:33 PM.
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  #7  
Old 21-03-2017, 06:16 PM
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Xtractorfan Xtractorfan is offline
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You may be able to get someone to disconnect the battery..under the drivers seat.. and remove the rear sam and fuse box and blow dry them with a hair dryer and they should work perfectly.
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