40A FUSES DONT HAVE POWER IN ENGINE FUSE BOX
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From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
40A FUSES DONT HAVE POWER IN ENGINE FUSE BOX
My 08 Mercedes ML63 AMG does not have power in engine fuse box 40A fuses and my AIrmatic pump does not kick in. Anyone can point me in a right direction where to look to get power to them fuses up front? my air springs hold air no leak. Car sits at the same level for few days but valve not working and pump not kicking in. 2 codes 5507 and 5508 Thank you!
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From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Anyone??? few days back i pulled out 2 of them 40A fuses and put them back it started to work. worked for 2 days stopped. Today tried. started the car had power to 40A fuses then after few sec right one lost power then keft one lost power but air pump never kicked in and car sits pretty low. its drivable but low. anyone knows where the 2 40A fuses get there power from ? thanks
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From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
The fuse boxes have a history of corrision in the contacts underneath the fuses and relays. I assume you tested the airmatic relay. MB replaced what would otherwise be wires with very long contacts, which are exposed. I don't know much about it but have seen it on youtube. Might be something to check out if you're getting no power to the fuses. It seems to be a common issue.
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ML 63 AMG
The fuse boxes have a history of corrision in the contacts underneath the fuses and relays. I assume you tested the airmatic relay. MB replaced what would otherwise be wires with very long contacts, which are exposed. I don't know much about it but have seen it on youtube. Might be something to check out if you're getting no power to the fuses. It seems to be a common issue.
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From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Got constant power to the box, so im thinking 40A fuses have to be hot car off or started right? so that tells me that fuse box inside got corrosion or something burned.
Im thinking to take the fuse box out take it apart, see what condition it is inside. if corrosion ill clean it with alcohol if damaged just replace it.
Question what if i jump from positive lead where it comes in to the fuse box to the 40A fuse to see if it will start working, will that be ok? will it cause any damage? just want to see if the compressor will kick in and just to get the car to go up a little its getting pretty low.
Im thinking to take the fuse box out take it apart, see what condition it is inside. if corrosion ill clean it with alcohol if damaged just replace it.
Question what if i jump from positive lead where it comes in to the fuse box to the 40A fuse to see if it will start working, will that be ok? will it cause any damage? just want to see if the compressor will kick in and just to get the car to go up a little its getting pretty low.
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From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
I reckon thatll be ok as long as your careful with the connections. I had a look at mine and its easy to see the feed in. This is me being a bit difficult, but when you tested for current on that fuse, did you leave it attached and then try and trigger the airmatic - waking up the car etc and seeing if there was any current flow. Its intermittent and not constant- maybe the same for the relay? Before you do that, did you check all the grounds to make sure they're good? I'd be doing that before anything else.
Last edited by BlackML550; Jan 21, 2024 at 04:47 AM.
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From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Ok today i checked ground lead 85 on the relay, No Ground! 40A fuse NO POWER! fuse definitely is good. Took the whole inside of the front fuse box out, took it apart to inspect it. No signs of any water or anything burned. Very simple construction, not much can get wrong in this one. What i checked with a multimeter, that hot coming in to 40A fuse for the airmatic is completely separate from everything. Has nothing to do with a big heavy red wire that comes in to the box itself.
So i wonder where does it go from that 40A fuse to, somewhere under the pass seat or to airmatic module or rear fuse box?
BIG QUESTION HOW CAN I JUMP THE COMPRESSOR TO FORSE IT TO PUMP SOME AIR ? for me to buy more time because i am in Cleveland OHIO and its cold and snowing here almost impossible to work on it. almost froze today working on it. Thank you!
Btw. this is my last car i will buy with airmatic. owned the car for 4 years i replaced pump and valve 3 times, both rear air bags one busted and both front one busted, always have to grease the arm ball joints of the level sensors, really pain in the neck! would not risk go somewhere for a far trip. its cool to have, yes! but very unreliable!
So i wonder where does it go from that 40A fuse to, somewhere under the pass seat or to airmatic module or rear fuse box?
BIG QUESTION HOW CAN I JUMP THE COMPRESSOR TO FORSE IT TO PUMP SOME AIR ? for me to buy more time because i am in Cleveland OHIO and its cold and snowing here almost impossible to work on it. almost froze today working on it. Thank you!
Btw. this is my last car i will buy with airmatic. owned the car for 4 years i replaced pump and valve 3 times, both rear air bags one busted and both front one busted, always have to grease the arm ball joints of the level sensors, really pain in the neck! would not risk go somewhere for a far trip. its cool to have, yes! but very unreliable!
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From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
That wire goes to the Body Control Module. Have you got the electrical diagram?
Also, read post No. 18 in the thread below. Something to investigate. Could be your problem.
https://www.benzworld.org/threads/wi...essor.1869513/
Also, read post No. 18 in the thread below. Something to investigate. Could be your problem.
https://www.benzworld.org/threads/wi...essor.1869513/
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From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
Igor
Here are some wiring diagrams that I downloaded. Note they are suitable for my ML550 with ADS and may differ from yours, but I wouldn't expect much change, if at all. Let me know if you need anything else.
Here are some wiring diagrams that I downloaded. Note they are suitable for my ML550 with ADS and may differ from yours, but I wouldn't expect much change, if at all. Let me know if you need anything else.
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2010 ML550 VIN WDC1641722A564750, 2010 B180
Also, check this thread for easy fuse locations
https://mbworld.org/forums/m-class-w...ml#post8911332
https://mbworld.org/forums/m-class-w...ml#post8911332
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From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Yes, very helpful link but from the last comment there i cant understand what little plug he was talking about that he had to solder pins and where is the location of BCM?
Checked all the fuses and relay front back but i didnt check any at the pass door in the front.
Thank you for diagrams. put my car in the garage turned on space heater will see if i can go work on it tomorrow.
Checked all the fuses and relay front back but i didnt check any at the pass door in the front.
Thank you for diagrams. put my car in the garage turned on space heater will see if i can go work on it tomorrow.
Last edited by IgorE350; Jan 21, 2024 at 10:57 PM.
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From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Hi, yesterday got carpet out got to BCM unplugged it. All 3 plugs look nice and clean, took the BCM out took the cover off all the components look clean no sign of rust or water.
Brown wire from 40A fuse not going to BCM its going under front pass seat or rear fuse box somewhere. checked continuity between airmatic relay ground and BCM on the big plug top row green wire if im not mistaking its all good but how do i check if the BCM puts out the Ground to the relay that i don't know.
Got everything back together then started the car got test lite put it on the 40A fuse it lit up but compressor didn't kick on after about a minute i hear a click and 40A fuse didnt get no power and malfunction popped up on the dash.
So i am thinking its the valve or compressor is bad. Actually replaced both not long a go and when i was plugging the valve i had really hard time to push the plug in.
Today ordered another valve and compressor on FCP Euro, when it comes ill install and update what's going on. if that wont help my next step will be replacing the BCM
BTW does front SAM module has anything to do with airmatic system or no?
Brown wire from 40A fuse not going to BCM its going under front pass seat or rear fuse box somewhere. checked continuity between airmatic relay ground and BCM on the big plug top row green wire if im not mistaking its all good but how do i check if the BCM puts out the Ground to the relay that i don't know.
Got everything back together then started the car got test lite put it on the 40A fuse it lit up but compressor didn't kick on after about a minute i hear a click and 40A fuse didnt get no power and malfunction popped up on the dash.
So i am thinking its the valve or compressor is bad. Actually replaced both not long a go and when i was plugging the valve i had really hard time to push the plug in.
Today ordered another valve and compressor on FCP Euro, when it comes ill install and update what's going on. if that wont help my next step will be replacing the BCM
BTW does front SAM module has anything to do with airmatic system or no?
Last edited by IgorE350; Jan 23, 2024 at 10:52 PM.
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From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Got new valve and new airmatic pump yesterday from fcp euro. replaced both cleared the old codes, started the car all punped up leveled the car no problem. Used the car all day today, everything works as it should.
I am guessing that the valve and the pump i replaced about a moth a go was no good, give me problems from the first day.
Hopefully that was it ill update in a week or 2. Thank you guys for all your helpful info, wiring and module location.
I am guessing that the valve and the pump i replaced about a moth a go was no good, give me problems from the first day.
Hopefully that was it ill update in a week or 2. Thank you guys for all your helpful info, wiring and module location.
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2010 ML550 VIN WDC1641722A564750, 2010 B180
Good to hear. Out of curiosity, what brand were the compressor and valve block that you used last time? Were they name brands or EBay?
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From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
If i remember right when i got the car in 2020 i got both Arnott valve and compressor from FCP EURO. First one lasted more than 3 years, 2nd one about 7 months, 3rd one 2 days and this 4th one looks like working fine. Lifetime warranty payed off i guess. only have to pay shipping back.
Noticed all 4 sets act different. Car height was diff on all of them and how it acts on door closing as well. I dont know how to explain that but its weird.
Would not buy another car with air suspension!!!!
Noticed all 4 sets act different. Car height was diff on all of them and how it acts on door closing as well. I dont know how to explain that but its weird.
Would not buy another car with air suspension!!!!
