M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

ML 500 HEATED SEATS NOT WORKING

Old Jan 17, 2016 | 04:56 PM
  #1  
S430LUCKDRAGON's Avatar
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From: Providence RI
2003 S 500 4 MATIC , 2001 S 430 , 2003 ML 500
ML 500 HEATED SEATS NOT WORKING

Its weird my heated seats are not working and the light is just flashing on the heated seat buttons when i press them ! This started yesterday when i gave my friend a jump start and now my coolant light is on and flashing every minute or so .
I checked my heated seats 20 amp fuse under the hood and the fuse was ok and its getting power . Are there any other fuse boxes in this vehicle besides the one under the hood and the one in the passenger side foot well ?
Are there any relays i should check ? Thanks in advance for any advice
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Old Jan 19, 2016 | 04:54 AM
  #2  
Maj. Dundee's Avatar
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From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
Originally Posted by S430LUCKDRAGON
Its weird my heated seats are not working and the light is just flashing on the heated seat buttons when i press them ! This started yesterday when i gave my friend a jump start and now my coolant light is on and flashing every minute or so .
I checked my heated seats 20 amp fuse under the hood and the fuse was ok and its getting power . Are there any other fuse boxes in this vehicle besides the one under the hood and the one in the passenger side foot well ?
Are there any relays i should check ? Thanks in advance for any advice
I am assuming you are referring to the ML500, which has a 100 amp fuse attached to the positive battery cable (GREEN arrow).

You will see that it is blown because of incorrect jumping procedure.
Attached Thumbnails ML 500 HEATED SEATS NOT WORKING-fuse-battery-55-500.jpg  
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Old Jan 20, 2016 | 09:36 PM
  #3  
S430LUCKDRAGON's Avatar
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From: Providence RI
2003 S 500 4 MATIC , 2001 S 430 , 2003 ML 500
Thank you guys both so much it was the 100 amp fuse dundee had mentioned , i replaced it and it seems to have cleared up both of the issues
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Old Dec 3, 2018 | 11:05 AM
  #4  
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From: North Carolina
2003 Mercedes ML 500
help

Originally Posted by S430LUCKDRAGON
Thank you guys both so much it was the 100 amp fuse dundee had mentioned , i replaced it and it seems to have cleared up both of the issues
Where did you source the fuse I looked everywhere the only thing i can find is pictures of it on this forum
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Old Dec 3, 2018 | 11:23 AM
  #5  
Maj. Dundee's Avatar
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From: Bronx, N.Y.
2002 ML 320 & 2006 ML500

Originally Posted by fvlage
Where did you source the fuse I looked everywhere the only thing i can find is pictures of it on this forum
Please UPDATE YOUR PROFILE in USER CP to include the year of you ML and where you live so I can give you the correct part #..
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Old Dec 3, 2018 | 11:59 AM
  #6  
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From: North Carolina
2003 Mercedes ML 500
Ok I think I got it if not i have 2003 Mercedes ML500 and I live in North Carolina
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Old Dec 3, 2018 | 12:29 PM
  #7  
Maj. Dundee's Avatar
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From: Bronx, N.Y.
2002 ML 320 & 2006 ML500

Originally Posted by fvlage
Ok I think I got it if not i have 2003 Mercedes ML500 and I live in North Carolina
Excellent.

You can only buy this fuse (100 amp) from the dealer and the nut must also be purchased as they break when removed.
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