M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

Interior Dome Lights.

Old Jul 9, 2020 | 03:18 PM
  #1  
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W212 E350; W166 GLC300; W164 ML550; W164 ML63; W221 S65; W220 S430; Escalade ESV
Interior Dome Lights.

I'm looking for advice on how to troubleshoot the interior dome light issue on 08 ML550.
The dome lights on the overhead console, the dome lights on the 2nd row doors and the dome light on the rear gate are not working.
The readings lights are working. SDS shows no faults with overhead console module. Fuse #13 and fuse #41 are good. Any other things to check?
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Old Jul 10, 2020 | 04:46 AM
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There are two fuses that power up the N70 Overhead Console, $41 & 42..

With the key on. check both contacts on each fuse for 12v.

What does fuse 13 in what fuse box have to do with this?
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Old Jul 10, 2020 | 07:07 PM
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W212 E350; W166 GLC300; W164 ML550; W164 ML63; W221 S65; W220 S430; Escalade ESV
On F13 I misread upper console as overhead console. Both F41 and F42 showed 13.8v and the fuses are good. Question: would overhead console get opened (disassembled) for sunroof maintenance?
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Old Jul 11, 2020 | 04:08 AM
  #4  
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Originally Posted by DrDoe
On F13 I misread upper console as overhead console. Both F41 and F42 showed 13.8v and the fuses are good. Question: would overhead console get opened (disassembled) for sunroof maintenance?
Now you must remove the Over. Console and at conn. D, check RED wires 5 & 4 for 12v.

What do you mean by "sunroof maintenance"?



Attached Files
File Type: pdf
R&I Overhead Control Panel.pdf (101.8 KB, 185 views)
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Old Jul 11, 2020 | 06:42 AM
  #5  
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"Sunroof maintenance". I didn't have time to do power steering works so I dropped off the car at the dealer last month. I wonder if they get into the overhead console when they said the sunroof also needed lubrications.
I will check inside the overhead console.
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Old Jul 11, 2020 | 04:07 PM
  #6  
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Both 4 and 5 wires are red so I got 0v across them. Between 3 and 4, 5 and 6, 4 and 6, I get 12v.
Anyway, I found and fixed the issue with all 5 ceiling lights. It's too embarrassing to say what they were...
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Old Jul 12, 2020 | 11:52 AM
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Originally Posted by DrDoe
Both 4 and 5 wires are red so I got 0v across them. Between 3 and 4, 5 and 6, 4 and 6, I get 12v.
Anyway, I found and fixed the issue with all 5 ceiling lights. It's too embarrassing to say what they were...
You probably had the switch off.
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Old Jul 12, 2020 | 12:28 PM
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Switch off would be a major duh. That wasn't it.
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Old Jan 9, 2025 | 05:50 PM
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Originally Posted by DrDoe
Switch off would be a major duh. That wasn't it.
What was the issue ? 2011 GL5500… no dome lights or interior lights with doors open. Same issues, fuses are good. Etc
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