Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Bimmer Tool Rental
User Name
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management

LinkBack Thread Tools Display Modes
Old 07-10-2016, 03:37 PM
Join Date: Sep 2009
Location: New York
Posts: 121
Meestahbig is on a distinguished road
2003 X5 AC Compressor wont engage - good detail so far, but stuck


so was out and about on my last day of vacation (thank god) and got back into the car, after a 15 minute stop at a candy shop, some odd things happened. I took the window lock off and the kids in the back put the windows, up/down a few times... I then put it back on (locked it), but they were still able to open/close the windows... this was very odd. I was like uh oh... That issues seems to have gone away and not returned after a I shut the car off/on again.

But at the same time, the AC stopped blowing cold when we got into the car after that 15 minute stop. I don't know if the two issues are connected.

AC was running great earlier in the day. I've checked all fuses and all are ok, in both the trunk and in the glove box. The aux fan spins up when the car runs hot (low speed spin) and when I pull the hi pressure switch plug (hi speed spin).

I pulled out the IHKA module from the dash and got a reading of 4.8v AC, I thought it read 12.8v AC at one point, but could not get it to do that again.

So now I am stuck. I would like to test the AC compressor clutch by applying 12v to it, but am unsure how to do it, does the car need to be on (probably if I want to see it engage/spin). I also could not figure out how to unplug the single lead going into the compressor, does it just pull out (it's pretty tight).

Ambient temp sensor is working fine with normal temp readings.

I get high pressure readings on the low side when I hook up a gauge, this seems normal since the compressor is not running.

thanks for the help.
Reply With Quote

Sponsored Links

Old 07-10-2016, 11:16 PM
Join Date: Mar 2015
Location: Texas
Posts: 148
Deansbimmer is on a distinguished road
At first I was wondering why you'd be happy for the end of your vacation....Then I read "candy shop" and wondered if that was 'code' for something else....Then I read "kids", and then it all clicked.

Joking aside... Are you able to connect it to a a BMW scanner like GT1 or ISTA? They have a module for climate control which will tell you what is wrong. I would go that route first. I'm sure the compressor clutch is fine and you already know there is pressure. With the potential existence of another electrical issue within the general module (windows), I would try to narrow it down by seeing what the car could tell you first. It could be an error in another system which is overriding the command for compressor.
Reply With Quote
Old 07-10-2016, 11:57 PM
Join Date: Sep 2009
Location: New York
Posts: 121
Meestahbig is on a distinguished road
funny... i reread my post...

no I dont have access to a scan tool. I dont have one and dont really know anyone that does. I would not be opposed to buying one, b/c I really am doing most everything myself on the car to this point (or at least having a full understanding of what is done).

All electrical is working fine and as it should be. the window lock thing was really a mystery, but haven't seen it happen again all day today.
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 04:32 PM.
vBulletin, Copyright 2019, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.