Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Brake Warning Light and Rain?


Recommended Posts

I have an 01 C4. Just had PPI and $10k of service at dealer (that ruined the car seat leaving window open in rain) done 3 months ago with no mention of brake pad or rotor wear. Brake light came on first really rainy day in a while and does not clear turning car on and off . Light only came on briefly weeks ago only right after I washed the wheels. Dumb question probably but Before I start pulling wheels: is there a way to measure the pad or rotor thickness without removing the wheel or is the water causing a short - is that even possible on a 12 v circuit? Check other posts could not see anything about water. I drive in rush hour half the time and beat on the clutch and brakes pretty hard. What is enough thickness for pad and rotor, if I am within a few months of having to do it I will just do it. Read the DYI tutorial - is this pretty easy? Would love to get Suncoast parts and just do it instead of blowing another $2400 already. many thanks in advance

Edited by PorscheServiceThen529Plan
Link to comment
Share on other sites

  • Admin

It is not a short it is an "open". The brake wear circuit looks for a broken connection. Usually this is when a brake sensor wire wears through - but i can occur if a brake sensor has a bad connection or a wire gets broken.

I think it best to inspect the brake pads and disc wear with the wheel off. You can also inspect (and even test) the brake sensors.

I think a good wheel wheel inspection is your next task.

  • Upvote 1
Link to comment
Share on other sites

Which window was open to the rain? Weird things happen when the alarm module gets wet it is located under the drivers seat. I don't think the brake pad sensors are routed thru it, I had a real hard time to follow a the circuits that pass though it. but any connector that gets water in it can do weird things.

Link to comment
Share on other sites

The wear sensors are in a loop, running from the instrument cluster, via each sensor, and back to the cluster. A break in the circuit, or a short to ground, will set off the warning light. It works both ways to make it failsafe.

However, you need to check the pad thickness to see if they are getting low. The sensors are about 4mm diameter, so once the pads get down to that thickness they wear thru the sensor, and the circuit goes to ground. If the pads look good, check the sensor connectors, as if water gets in they corrode, and the loop goes open circuit.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.