Get to your PDC unit (water issue)

This section shows how to carry out modifications to your 1 Series. Please remember that if you are modifying your car to take photo's at each step and document the mod in here.
Please read the announcement at the top of the section before posting.

Moderators: babybmwadmin, marco_polo, Producethis, Lambster, Rich196

User avatar
stevesurrey
Enthusiastic Member
Enthusiastic Member
Posts: 1202
Joined: Sun Nov 07, 2010 12:56 pm
Location: Surrey

Re: Get to your PDC unit (water issue)

Post by stevesurrey » Mon Jan 02, 2017 8:30 pm

Is the comfort pack module the same as the PDC module ? They would seem to do different things or am I confused ?
E81 120D (N47) SE+Dynamic Package, 2007/57, M Sports Suspension, Montego Blue, Pro HU+HiFi Speakers & Dipstick

Mil300
Junior Member
Junior Member
Posts: 3
Joined: Mon Jan 02, 2017 12:00 pm

Re: Get to your PDC unit (water issue)

Post by Mil300 » Sun Jan 08, 2017 7:22 pm

Anyone have any idea what could be causing the front/back parking distance control not to be working?

User avatar
Octavius
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 18424
Joined: Tue Jul 26, 2011 1:51 pm
Location: In The Land Of The Romps

Re: Get to your PDC unit (water issue)

Post by Octavius » Mon Jan 09, 2017 12:57 am

Mil300 wrote:Anyone have any idea what could be causing the front/back parking distance control not to be working?
Have you read through the last 17 pages :lol:
MY SIGNATURE STOPPED WORKING AFTER AN UPDATE.

User avatar
binocular
Experienced Member
Experienced Member
Posts: 203
Joined: Fri Oct 07, 2016 4:20 pm

Re: Get to your PDC unit (water issue)

Post by binocular » Mon Jan 09, 2017 1:49 pm

My rear PDC system has become a nuisance the last week or so. Sometimes works perfectly other times loud tone and red distance marker usually from one but occasionally 2 sensor positions as though there was an obstruction behind when there clearly isn't! Sometimes alarm and red marker persists for several seconds even when car put in DRIVE. PDC unit or faulty sensors?


Sent from my iPhone using Tapatalk
Alpine White F20 M135i, auto, adaptive, MPE.

scw02102
Junior Member
Junior Member
Posts: 1
Joined: Wed Jan 25, 2017 10:55 pm

Re: Get to your PDC unit (water issue)

Post by scw02102 » Wed Jan 25, 2017 11:04 pm

useful thread but still havent fixed my issue

My 120d parking sensor errors on the dash and light flashes on the button when I engage reverse. I checked my PDC and was dry but still ordered a new one from ebay that apparently is perfect, the model numbers match perfectly and came from the same 120d as mine.

Plugged in tonight still no luck exactly the same issue.

Any ideas what to test next? I have also listen for the clicking noise on the sensors from the bumper but cant hear anything at all, also I have checked both fuses and both are fine

What next.....????
thanks in advance

FirBim
Experienced Member
Experienced Member
Posts: 408
Joined: Sat Jun 21, 2014 6:26 pm

Re: Get to your PDC unit (water issue)

Post by FirBim » Sun Feb 12, 2017 11:50 am

This relates to 5 series cars, but interesting perhaps -

"More than 300,000 BMW owners will soon be eligible to claim their portion of a $478 million settlement over allegations that a design defect resulted in water damage to electrical components in vehicles’ trunks.

Reuters reports that the settlement, filed in U.S. District Court in New York last week, resolves a class-action lawsuit that claimed the carmaker knew for years about an issue in the affected vehicles that could cause water damage, interferring with the vehicle’s electrical components including lights, speedometer, and wipers, but did nothing to address the problem.

According to the settlement, which covers owners of model year 2004 to 2010 BMW 5 Series vehicles, customers claim the carmaker became aware in 2004 that many of its vehicles contained either a clogged sunroof drainage tube or other issues that allowed water to enter the trunk area. If this occurred, the electrical components located in the spare wheel well could become damaged."


https://consumerist.com/2017/02/08/bmw- ... aged-cars/
2010 E87 120d M Sport, Le Mans Blue

Cabbage Patch
Knowledgeable Member
Knowledgeable Member
Posts: 75
Joined: Sat Oct 29, 2016 7:33 am
Location: Oxfordshire

Re: Get to your PDC unit (water issue)

Post by Cabbage Patch » Fri Feb 17, 2017 11:49 pm

The PDC in my 2012 F10 520d has gone screwy this week. I'll take a look in the boot for the module but before I do can anyone point me to where it lives in an F10?

Off topic on BabyBMW I know but this forum's much more active than any 5 series one.
Estoril Blue F20 M140i

User avatar
SpaceTofu
Junior Member
Junior Member
Posts: 36
Joined: Fri Dec 30, 2016 11:10 am

Re: Get to your PDC unit (water issue)

Post by SpaceTofu » Wed Feb 22, 2017 10:32 pm

Hi everybody,

another victim here; 2010 116d purchased two weeks ago from a dealer; had the chance to drive it couple times over a month and never had an issue, now that I own it, the PDC goes haywire, how frustrating!
Did the whole thing as explained on page 1 (thanks Lee!) to find definitely at least an inch of water in the well. I mean, what are the odds that the issue never came up when test driving, that water must have been there since ages!

Anyhow, I am waiting for the rice to work its magic, however I wanted to know if in all these years are there fixes made by users which definitely worked?
I surely will go down the route of sealing the case, putting the whole thing in plastic bags and so on, but I rather fix the problem at the source and don't have any water floating around.

Is sealing the vent with mastic as suggested by Nottsknots the ultimate fix? Or around the brakelight? Or both?
If the brakelight is one of the possible cause, how come users don't find damp patches on the carpet behind the left braking light?

Finally, can someone point out where precisely in the back seat must be checked for water? is it deemed enough to have a look at the seatbelt bolts (already carried out when inspecting the car prior to purchase and all fine, btw)?

Thank you all
E87 116d 2010 N47

Rich118d
Junior Member
Junior Member
Posts: 3
Joined: Fri Mar 24, 2017 7:34 pm

Re: Get to your PDC unit (water issue)

Post by Rich118d » Fri Mar 24, 2017 7:40 pm

Thank you for this guide. I've just found I had about an inch of water submerging my pdc.
The pdc is in rice now drying out.
I was getting the dash issue with all the lights coming up and rev/speed dropping to zero before coming back on. Car ran fine during the dash issue. Will that be a seperate issue Or connected.
Parking sensors stopped beeping around Christmas time.

The back seat is also wet around the nearside isofix point.
It's a December 2007 registered 118d.

User avatar
Nottsknots
Enthusiastic Member
Enthusiastic Member
Posts: 1861
Joined: Sat Jun 29, 2013 8:35 pm

Re: Get to your PDC unit (water issue)

Post by Nottsknots » Fri Mar 24, 2017 8:08 pm

My whole dash went haywire before I cured mine. Started with a couple of lights, then full christmas tree effect, and needles dropping out. Probably related - water on the comms messes with everything.

Dont forget to drain the swamp (stick a couple of 2mm holes through the grommets at the bottom of the well in the boot to let any more water drain out and if you can, solve the water ingress problem (probably around the air vent in the side of the rear wing, or light cluster).
E87 118d, stock, plus PDC control unit drain, Parrot, debadged, Mothercare baby shades (but no babies), and occassionally a good layer of wax. Instantly forgettable, and thats the way I like it.

User avatar
space
Experienced Member
Experienced Member
Posts: 255
Joined: Thu Jul 21, 2011 6:58 pm
Location: Kent

Re: Get to your PDC unit (water issue)

Post by space » Tue Mar 28, 2017 8:46 pm

Same story here...Pulled my PDC unit out today......swimming in water!! :shock:
So much so its corroded a leg of one of the chips to nothing.

Are some replacement PDC units with exactly the same part no working without coding?

User avatar
space
Experienced Member
Experienced Member
Posts: 255
Joined: Thu Jul 21, 2011 6:58 pm
Location: Kent

Re: Get to your PDC unit (water issue)

Post by space » Wed Apr 12, 2017 5:45 pm

I replaced PDC unit with a unit with the same part number off ebay but they are still not working. Display warning light now comes on and front sensor button flashes!

I can test the rear sensors by putting my ear to the sensors and can hear all 4 are clicking but how can I test the front sensors?

I know I may also need my new PDC unit coded but wanted to just eliminate a faulty sensor could be causing failure

User avatar
floydroid
Junior Member
Junior Member
Posts: 30
Joined: Sun Feb 07, 2016 6:21 pm

Re: Get to your PDC unit (water issue)

Post by floydroid » Thu Apr 13, 2017 1:29 pm

scw02102 wrote:
Wed Jan 25, 2017 11:04 pm
useful thread but still havent fixed my issue

My 120d parking sensor errors on the dash and light flashes on the button when I engage reverse. I checked my PDC and was dry but still ordered a new one from ebay that apparently is perfect, the model numbers match perfectly and came from the same 120d as mine.

Plugged in tonight still no luck exactly the same issue.

Any ideas what to test next? I have also listen for the clicking noise on the sensors from the bumper but cant hear anything at all, also I have checked both fuses and both are fine

What next.....????
thanks in advance
Snap. I bought a brand new PDC unit from Cotswold BMW but it didn't fix it. Checked one 5A fuse (behind glove compartment) and it was OK - where is the other? I cleaned all the sensors carefully and then removed the rear bumper and checked and cleaned all the connections. Still nothing.

Strange thing is that sometimes they work for a few seconds before failure and this is why I doubted the fuse.

I've not tried to listen for clicking yet. I'm buying Carly to see if it can help identify the error.

User avatar
space
Experienced Member
Experienced Member
Posts: 255
Joined: Thu Jul 21, 2011 6:58 pm
Location: Kent

Re: Get to your PDC unit (water issue)

Post by space » Thu Apr 13, 2017 7:47 pm

My fuse diagram shows 2 fuses in the fuse box both mine ok.

I have tried 2 different new control units both didnt fix think coding is needed :roll: I hate these sort of faults!

User avatar
Nottsknots
Enthusiastic Member
Enthusiastic Member
Posts: 1861
Joined: Sat Jun 29, 2013 8:35 pm

Re: Get to your PDC unit (water issue)

Post by Nottsknots » Thu Apr 13, 2017 11:14 pm

Cabbage Patch wrote:
Fri Feb 17, 2017 11:49 pm
The PDC in my 2012 F10 520d has gone screwy this week. I'll take a look in the boot for the module but before I do can anyone point me to where it lives in an F10?

Off topic on BabyBMW I know but this forum's much more active than any 5 series one.
Not sure the 5er (at least the F10) has a PDC module:
https://www.newtis.info/tisv2/a/en/f10- ... dc/XJL1zQN
I looked for a random model and random PDC config, so search for yours within there and you might find different.
E87 118d, stock, plus PDC control unit drain, Parrot, debadged, Mothercare baby shades (but no babies), and occassionally a good layer of wax. Instantly forgettable, and thats the way I like it.

Post Reply

Return to “How To's”