E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > Suspension & Braking Forum by BimmerWorld

Suspension & Braking Forum by BimmerWorld
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!
Sponsored by BimmerWorld

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 10-10-2013, 01:35 PM   #1
Brissyjohn
Registered User
 
Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Brake Pressure Switch

Has anyone ever replaced a brake pressure switch? See item 2 on the diagram.

If you have:

How did you remove the electrical plug?
Are there any other traps with the job apart from losing brake fluid?

__________________
Brissyjohn is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 10-10-2013, 01:42 PM   #2
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,036
My Ride: 2004 330Ci OBM
That's a simple plug in connector just like any other on the car.
__________________
BMW VIN Decoder

Common Sense is officially dead.
WDE46 is offline   Reply With Quote
Old 10-11-2013, 06:05 AM   #3
Brissyjohn
Registered User
 
Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Okay, so does it just simply pull off or is there some trick to get it past any "wedge" locks that are there - see the image below with what appears to be a locating/locking wedge shape on the plug end:
__________________
Brissyjohn is offline   Reply With Quote
Old 10-11-2013, 01:21 PM   #4
raykelly
Registered User
 
Join Date: Jan 2012
Location: Sussex, England
Posts: 21
My Ride: 2004 330i Touring
Did this last weekend.
I used this guide.
http://autotecdirect.wordpress.com/2...r-replacement/
Have a Litre DOT4 handy.
When you take the sensor out it will drain fluid pretty quick so be ready to swap as quickly as possible. Push plenty rag underneath to catch fluid.
The plug has a clip that just needs to be pinched between finger and thumb.
Make sure you have a FLEXIBLE HEAD RATCHET SPANNER 27MM, to get the leverage.
Finally you should also use INPA to bleed by activating the DSC. Works pretty well. Just in case you get air into the DSC.
raykelly is offline   Reply With Quote
Old 10-11-2013, 03:00 PM   #5
Brissyjohn
Registered User
 
Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Thanks for that raykelly.
The DSC and Brake orange lights have gone out again and the codes (5e20 and 5e24) were cleared. I'll wait until they come on for good as the switch costs AU$390 (each) here....and that's the club discount price. Extortion IMO
__________________
Brissyjohn is offline   Reply With Quote
Old 10-11-2013, 03:04 PM   #6
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,036
My Ride: 2004 330Ci OBM
Brake Pressure Switch

Have it shipped from the US. Is that possible?


Sent from BimmerApp mobile app
__________________
BMW VIN Decoder

Common Sense is officially dead.
WDE46 is offline   Reply With Quote
Old 10-11-2013, 03:15 PM   #7
Brissyjohn
Registered User
 
Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Yes, good idea. Is there anyone you guys might know that I can rely on to sell me the correct part and send here?
I'm very wary of getting shafted by internet traders - I haven't had a lot of luck in that area.
Pelican (who I would trust) have a pressure switch but it is the wrong part# and looks like it might be off the earlier cars. Mine is a 2003.
__________________
Brissyjohn is offline   Reply With Quote
Old 10-11-2013, 03:18 PM   #8
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,036
My Ride: 2004 330Ci OBM
Call ECStuning or FCPeuro and see if they can help you out.
__________________
BMW VIN Decoder

Common Sense is officially dead.
WDE46 is offline   Reply With Quote
Old 10-11-2013, 03:42 PM   #9
Brissyjohn
Registered User
 
Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Thanks WDE46. I'll give them a try.
__________________
Brissyjohn is offline   Reply With Quote
Old 10-11-2013, 03:44 PM   #10
ApolloTheGod
Registered User
 
Join Date: Mar 2012
Location: Everywhere
Posts: 461
My Ride: E92, E46, E36, Caddy
This is a good time to flush your whole system. Id go unhook the bracklines on all corners of your car and have buckets ready and do a thourough flush. Dosnt bmw reccommend this every 2 years?
ApolloTheGod is offline   Reply With Quote
Old 10-11-2013, 04:11 PM   #11
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,036
My Ride: 2004 330Ci OBM
Quote:
Originally Posted by ApolloTheGod View Post
This is a good time to flush your whole system. Id go unhook the bracklines on all corners of your car and have buckets ready and do a thourough flush. Dosnt bmw reccommend this every 2 years?
Not that way. You just run the bleed screw until new fluid comes out.
__________________
BMW VIN Decoder

Common Sense is officially dead.
WDE46 is offline   Reply With Quote
Old 10-11-2013, 06:36 PM   #12
Brissyjohn
Registered User
 
Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Mine was flushed about 12 months ago during an Inspection 1.
__________________
Brissyjohn is offline   Reply With Quote
Old 10-12-2013, 01:12 AM   #13
raykelly
Registered User
 
Join Date: Jan 2012
Location: Sussex, England
Posts: 21
My Ride: 2004 330i Touring
The lights would come on randomly for me. I swapped the cables and then using INPA (I love INPA) could see that the fault moved from one sensor to another - proving the faulty sensor. Luckily the sensor hard failed and the lights were on all the time now just before I changed it - so there was no doubt.
Using INPA to bleed the brakes activating the DSC is very effective - getting out that fluid that has been in the DSC.
Even though I have a Motive pressure bleeder I think this is the most effective way of bleeding brakes.
This is a common part to fail on these cars it would seem - but a relatively easy DIY.
INPA link http://forums.bimmerforums.com/forum...o-bleed-brakes
raykelly is offline   Reply With Quote
Old 10-12-2013, 05:10 AM   #14
Brissyjohn
Registered User
 
Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Yes, they've been random for me too over the last 18 months but were stuck on for a couple of days and then went away on Friday - crazy car.
ECS Tuning have the part and I have emailed them to get a price shipped to Oz. Should hear back next week.
I don't have INPA but will look into that.
__________________
Brissyjohn is offline   Reply With Quote
Old 10-14-2013, 03:56 PM   #15
Brissyjohn
Registered User
 
Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Folks, I'm looking at buying my own scanner that will read and clear DSC and ABS system codes (as well as others).

I have a laptop running Windows Vista.

Which would be the better device?:
BMW Scanner 1.4.0 http://www.xcar360.com/bmw-scanner-1...scan-tool.html
or
Ediabas Inpa DIS http://www.ebay.com.au/itm/BMW-OBD-D...item3f17d6b808
__________________

Last edited by Brissyjohn; 10-14-2013 at 04:52 PM. Reason: Update
Brissyjohn is offline   Reply With Quote
Old 10-14-2013, 07:56 PM   #16
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,036
My Ride: 2004 330Ci OBM
Brake Pressure Switch

Most people get the BMW Scanner 1.4.0 from xcar360, myself included.


Sent from BimmerApp mobile app
__________________
BMW VIN Decoder

Common Sense is officially dead.
WDE46 is offline   Reply With Quote
Old 10-15-2013, 12:21 AM   #17
Brissyjohn
Registered User
 
Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Will it read ABS and DSC faults? I believe some code scanners will not.
__________________
Brissyjohn is offline   Reply With Quote
Old 10-15-2013, 08:20 PM   #18
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,036
My Ride: 2004 330Ci OBM
Brake Pressure Switch

It reads all BMW specific codes.


Sent from BimmerApp mobile app
__________________
BMW VIN Decoder

Common Sense is officially dead.
WDE46 is offline   Reply With Quote
Old 10-21-2013, 02:15 AM   #19
Brissyjohn
Registered User
 
Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Well the stupid lights are on again.
I'm ordering the parts tomorrow and will hopefully have them by the end of the month.
I'll also get a flexible head ratchet spanner and have a go at replacing both pressure sensors and update this thread at the conclusion.
Thanks for the help and advice guys.
__________________
Brissyjohn is offline   Reply With Quote
Old 10-30-2013, 06:10 PM   #20
Brissyjohn
Registered User
 
Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Lights went out again on about 23 Oct and came back on again on 29 Oct...grrr.
Parts have not arrived yet.
__________________

Last edited by Brissyjohn; 10-30-2013 at 06:11 PM.
Brissyjohn is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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 On
Censor is ON





All times are GMT -5. The time now is 08:31 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use