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E61 PDC Wierdness

Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: Technical & Model Specific Forums
Forum Name: BMW 5 Series
Forum Discription: This forum will deal with any issues on the BMW 5 Series (E12, E28, E34, E39, E60 & E61)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=50253
Printed Date: 30-April-2024 at 21:35


Topic: E61 PDC Wierdness
Posted By: Tonemapper
Subject: E61 PDC Wierdness
Date Posted: 18-June-2014 at 12:19

I wonder if anyone can offer some insight:

 

When I reverse out of my drive in the morning the PDCs all work fine. When I reverse into my work parking space 30 minutes later, 2 or 3 of the rear PDC sensors go onto a continuos beep and stay like that until it switches itself off. 

 

When I leave work at the end of the day, everything is fine again until I get home and then it starts the continuous beep again. 

 

This happens almost every day but not 100% of the time.

 

I've checked each sensor and they are all clicking. I've given them all a gentle tap, squirted with WD-40. This has been going on for a couple of months.


My 1st thoughts are that the PDC Control Module is on the way out. Has anyone replaced one of these?

 

Any other ideas?

 

 

 

Thanks


Replies:
Posted By: Andrew Rolland
Date Posted: 23-June-2014 at 13:01
Hi and welcome to the forum.
 
Have you polished the car?  The sensors need to be clean and a layer of wax or sealent over them may upset them.
 
I only had to http://www.bavarian-board.co.uk/forum_posts.asp?TID=48562&PN=1" rel="nofollow - replace a sensor when mine failed by listening for the one that doesn't click.  Never had to mess with the control unit though.


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Be exclusive and drive a Petrol 5 Series!

Current
'13 62 F10 535i MSport Auto

Previous
'04 04 E60 545i SE Auto
'03 53 E60 545i SE Auto (Stolen)
'98 S E39 523i SE Auto

Posted By: Crispy-d
Date Posted: 09-July-2014 at 22:30
Hello,

Random stab in the dark but it sounds like it only happens once the car is warm, suggesting that it could be something on the sensors as Andrew suggests. And I only say that as the exhausts do get hot, even on the diesels so it could be that a coating on them gets a little gelatinous after half an hour on the road.

Just a guess but I would certainly start by cleaning them thoroughly and possibly even wiping them with a gentle solvent to remove any grime or grease.




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BMW E39 M5 - 2002
Land Rover 110 4.0 V8 - 1986
BMW E39 530d Manual SE - 2001
BMW E34 540i 6 Speed Manual - 1995
Volvo S90 3.0 CD - 1997
Volvo 460 Si Turbo - 1995
Volvo 340 GL - 1989

Posted By: Tonemapper
Date Posted: 11-July-2014 at 14:19
Crispy,

Good thought however it can start to happen even after only a very short distance. I've tried cleaning them (not by removing them), WD40 etc. 

Thanks.

Posted By: Howard
Date Posted: 15-October-2014 at 19:08
I had a similar problem on my E38. PDC bleeped continuously. After a while I noticed that if it was dry weather, then it all worked fine so I waited until it was raining and took it to my dealer. Turned out the inner right rear was causing the problem. I replaced it with a new one (easy for this - not so easy for the outers) and have had no problem. Looked like it had some water in it when I checked it over after removal.


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1963 700 LS
1988 635 CSi
1990 M635 CSi no longer!
2001 E38 728i Individual


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