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)

Boxster 2.5 MY1999 - electrics


Recommended Posts

My car is a UK spec 2.5 Boxster MY1999. After a major accident repair, the internal ( overhead) light does not work at all, either in auto or manual mode. I have checked the bulb is ok!! The footwell lights fitted in the lower door panel are also inoperative. As a possible indicator of the problem, the central locking system does not re-arm if the car is not entered within 30 seconds of disarming the system, otherwise it is ok.

Porsche think that the alarm and control unit under the passenger seat is faulty and that the cost to fix is $800USD (500 Sterling pounds) I think that it could be a simple wiring fault due to the repair.

Any ideas out there? Can anyone supply a suitable wiring diagram?

Link to comment
Share on other sites

  • Admin

Inside lights, alarm, and power windows are all on the same circuit. Have you checked to see that there is a good 15 A fuse in C3 (Third row down, third fuse from the left). And all of those do go through the alarm unit so... they could be right.

Link to comment
Share on other sites

I'm surprised think the control unit is faulty straight away, as the re-lock option is configurable with the PST2 for on/off, how many seconds to re-lock etc.

Having looked at the wiring diagram, the interior lights are powered in the following way:

The positive comes from Bus Bar 7, 'Consumer Switched Off' which stays live for about 10 if alarm off, engine off. If car locked and alarm active, BB7 is switched off. Individual components have the negative (earth) side switched to control the individual device. Other things supplied from BB7 are:

Luggage compartment light Front

Luggage compartment light Rear

Make-Up mirror Left

Make-Up mirror Right

Seat Memory.

Are any of these working?

BB7 is switched from the alarm control unit. Has the plug been disturbed? Look at pin II/4 and II/8 on the alarm CU. OK?

Finally, fuse C3 (15A) is worth a check.

Link to comment
Share on other sites

I'm surprised think the control unit is faulty straight away, as the re-lock option is configurable with the PST2 for on/off, how many seconds to re-lock etc.

Having looked at the wiring diagram, the interior lights are powered in the following way:

The positive comes from Bus Bar 7, 'Consumer Switched Off' which stays live for about 10 if alarm off, engine off. If car locked and alarm active, BB7 is switched off. Individual components have the negative (earth) side switched to control the individual device. Other things supplied from BB7 are:

Luggage compartment light Front

Luggage compartment light Rear

Make-Up mirror Left

Make-Up mirror Right

Seat Memory.

Are any of these working?

BB7 is switched from the alarm control unit. Has the plug been disturbed? Look at pin II/4 and II/8 on the alarm CU. OK?

Finally, fuse C3 (15A) is worth a check.

Thank you for the advice on this problem. I checked out all suggested fixes, but nothing cured the fault. It turned out that Porsche tech department were right - the only answer was to replace the alarm module ( under the passenger seat) . This took 2 hours and £400 (£700 USD) from my bank account, just to get the interior lights working!! My current car is now sold to a new owner on 20 June, my new 987 Boxster S arrives next day........

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.