wseikow

Thx VS .
Is this something I could do myself?
What is the cost of Compressor and part #. I did search but didn;t get any hits... thought perhaps you had the info handy.
I've only had a quick look on the trunk , but I assume the compressor is on the left side.

Valvestud

"Is this something I could do myself?" Hard to answer, but I had no trouble doing it, but I also had the car on a 4 post lift.

:What is the cost of Compressor and part #. I did search but didn't get any hits... thought perhaps you had the info handy."

I used this:
"I've only had a quick look on the trunk , but I assume the compressor is on the left side:" The compressor is on the driver's side but underneath the car, not accessible from inside trunk.

Regards,

Joe

wseikow

HI, I purchased a new compressor, installed it. It did not solve the issue.
Does osmething need to be coded etc ?
Tommorrow I will re verify that the compressor works, stand alone. I will also ensure power is getting to the connectors in the harness , just to double check again.

If all is good with the connectors and the compressor as a stand alone test , any odeas of what else to look for?

Valvestud

Unfortunately, yes. There's a huge 60A fuse that powers the compressor. It may or may not blow if the compressor stalls/fails. The fuse is inside of this part: A2125407050, It's ~$200 new, but others are available used. The fuse itself is not replaceable (at least not that I could figure out). The unit is wedged between the shock tower and main battery on passenger side. It's the vertically mounted box that has the sliding red tab on top, which is used to jump start the car.

This video shows the unit taken apart so you can see what's inside. The fuse for the compressor is lower right black 60A to the right of the yellow set.

Another video showing the diagnosis. He states he's going to get a new fuse. However, at 7:45 in the video you can see his solution.
So, I would, and did, remove the unit and check the fuse. The easy way is to just wiggle the tab inside the receptacle. It should not move. Then just find a good source for the part and replace the whole thing. The good news is that the compressor was likely bad, and you've already taken care of that.

Regards,

Joe

wseikow

Thx for the info. Ill be checking tommorrow.

I dont have one of those scanners to check error codes. A friend says he has ODB 2 Scanner Elm 327 - OEBD EasyScan. [ no iddea what all theat means.... will that work on E63 to check codes?}

wseikow

I did some more tests. The relay switch in the trunk beside the air tank is good.
If I remove the relay switch and check voltage where the relay switch is installed , I have power.
I do not have power on the connector that plugs in to the compressor.

I don;t have any damged wires apparent.

Any other thinks I can check?

Valvestud

It's the fuse in the block I responded to you about.

wseikow

ok thx. I sourced a pre owned one , will only receive it in a few weeks.
I hope it goes well

wseikow

I did order a pre ownded terminal block A2125407050 , like pictured in the video above.
I am still looking take off the cover in order to inspect it.
The part I received does not look exactly like the one in the second video , it looks like the one in the first video.
The second video has 6 terminal posts by the green fuses. The first video has 4 terminal posts.

Which one should i have. Am I missing something or is A2125407050 not what i need for 2016 E63

Valvestud

You need the A2125407050 as I wrote in my original post on this issue.

Regards,

Joe

wseikow

HI Joe , just getting acces to my vehicle.
I see that the existing unit in my 2016 E63 is part number A2125407150 , not A2125407050.
Would you know the difference ?
Looks Like a pain to get the unit out to open it up.... and then not compatable.

Anf feedback appreciated.

Thx

Valvestud

Please provide your VIN

wseikow

My guess it may be a running change and the old part number may work. But where all the wires hook up on studs... the same number of studs are not the same on both units... SO I wouldn't know what to hook up where.

WDDHF7GB5GB241123

Valvestud

This is why it's important to always provide VIN. You need the A2125407150 part. Unfortunately there is not a lot of old ones out in the marketplace. New is about $200, and eBay shows no used ones. I have a 2014 and it takes the 050 part.

When you can get to the connectors, remove the one that connects to the black connector. Check to see if any of the spades inside the body are loose.

Joe

e55joe

My malfunction light has been on for a bit but didnt see any issues. Just the other day my rear was slammed to the ground. Checking things out i noticed my pump wasnt coming on so decided to replace it. After replacing it the pump now kicks on and malfunction light tells me to wait. As the pump kicks on and off like 3 times the rear wont move at all. Could something be blocking air in the valve block not letting it go through? Any suggestions before i start taking it apart.