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 lights stuck on, changed the switch, no dice..


Recommended Posts

As the title states my brake lights are always on.  Ordered a new brake light switch and swapped it out no dice.  Lights still stuck on.  Pulled fuse 7 row B and lights off.  Took both switches old and new apart and cleaned, reassembled and still no luck.   Can I jump the black and yellow wire in the female end of the connection to isolate it a bad new switch.  What should I do next?

Link to comment
Share on other sites

thanks Lauren i will take another look again when i get home.  do they look basically identical?  i was up side down and backwards to get in the spot and thought for sure i was in the right place, but you never know....

 

know that i think about it i am pretty sure cause i was able to start the car with the switch out when testing between the old and new.

Link to comment
Share on other sites

The brake switch that sends power to the brake lights should have a black wire and a black/orange wire going into the switch. There is a black/red wire going into the switch too if you have cruise control. Also, once the switch is removed, there should be no power to the brake lights. Normally the switch is OPEN between the black and black/orange wires.

Link to comment
Share on other sites

thanks Ahsai - the switch I was fiddling with this morning had 2 wires coming out the back of it.  I thought one was black and one was yellow.  When the car was running and I removed the switch the brake lights stayed on.  Is this further evidence I was having a senior moment and working on the clutch switch instead?

Link to comment
Share on other sites

12 hours ago, DBJoe996 said:

There are two switches on the brake pedal.  One is for the brake lights, the other for the cruise control.  Make sure you are working/replacing the right one.  See here http://www.autoatlanta.com/porsche-parts/hardparts.php?dir=996-99-05&section=702-00

Hi Joe, are you sure? Mine (MkII) has a single switch on the brake pedal and two switches on the clutch pedal - one for cruise control and one for starter interlock.

Link to comment
Share on other sites

  • Admin

Two switches on the brake pedal - one for brake lights and one for cruise control (if you have that option).

 

Two switches on the clutch pedal - one for clutch disengage and one for cruise control  (if you have that option).

 

brake switches.png

Link to comment
Share on other sites

That's interesting, Loren. I have cruise control but has a single switch on the brake pedal with 4 wires going in. The wiring diagram indicates that single switch feeds both the brake light and the DME/cruise control module (SPDT contacts inside the switch for the two circuits).

Link to comment
Share on other sites

Hey Ahsai!  So I was going by the parts listing...but...you got me to thinking so I crawled under the dash and looked.  I have cruise control and I can see only one switch on the brake pedal.  Go figure.  99 C2  So I think in our cars the cruise control detects the  brake application from the single brake lamp switch, which also explains why when the bulbs are burned out the cruise control doesn't work..

 

Cruise Control Circuits.JPG

Edited by DBJoe996
Link to comment
Share on other sites

6 minutes ago, DBJoe996 said:

Hey Ahsai!  So I was going by the parts listing...but...you got me to thinking so I crawled under the dash and looked.  I have cruise control and I can see only one switch on the brake pedal.  Go figure.  99 C2

 

I also crawled under the dash last night just to make sure I'm not crazy :) I also have one brake switch. It makes sense because from the wiring diagram, it's clear that the single switch controls both the brake light and the cruise control.

Link to comment
Share on other sites

Um, Joe's '99 has only one switch and I was only able to find one brake switch in all the wiring diagrams, regardless of MY.

Not that it matters to the OP now anyway.

 

 

brake-light-switch.jpg

Edited by Ahsai
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.