Warning: Check High-Level Brake Light
07-29-2020, 11:13 PM
#46
Three Wheelin'
Same issue here. Dealer replacing the harness under CPO warranty.
07-30-2020, 06:52 AM
#49
991.1 had this failure and I got it fixed under CPO. Porsche really should have left some slack in the wire here. The wing goes up pretty quick this will wear out over time if its really tight.
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ealingj (09-11-2023)
09-24-2020, 04:17 PM
#57
Details are in Step 1 of my Serpentine Belt DIY here: https://rennlist.com/forums/991/1043...ement-diy.html
Last edited by Class5Kayaker; 09-24-2020 at 04:19 PM.
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PJK3 (06-08-2024)
11-06-2020, 04:06 PM
#58
3rd Gear
High brake light
The warning light refers to the 3rd brake light located in the spoiler (not the one on vent above the engine).
Typical cause of this warning is due to a failing or failed connection in the wires going to the brake light.
The failure typically occurs in the area circled in red. Failure is caused by fatigue (the constant bending of this wire when the spoiler deploys and goes back down).
Steps to diagnose and fix:
1) Turn key to start position (engine can be on or off) and deploy the spoiler by pushing the spoiler button.
2) Once the spoiler is deployed, have another person step on the brakes. From behind the car, look and see if the brake light in the spoiler is lighting up.
3) If the brake light in the spoiler is not lighting up, it could be the wires failing. If it does turn on, it could be a loose connection somewhere.
4) To check if the wire is in good condition, remove the wire from the joint circled in red, and take a blade and carefully cut away the black cloth material protecting the wires.
5) Make a new connection if the wires are barely holding on or in my case completely broken. Your choice of soldering, butt connecting, etc.
https://photos.app.goo.gl/pJjPoxBJ8hMpgwb7A
Hope this helps.
EJ
Typical cause of this warning is due to a failing or failed connection in the wires going to the brake light.
The failure typically occurs in the area circled in red. Failure is caused by fatigue (the constant bending of this wire when the spoiler deploys and goes back down).
Steps to diagnose and fix:
1) Turn key to start position (engine can be on or off) and deploy the spoiler by pushing the spoiler button.
2) Once the spoiler is deployed, have another person step on the brakes. From behind the car, look and see if the brake light in the spoiler is lighting up.
3) If the brake light in the spoiler is not lighting up, it could be the wires failing. If it does turn on, it could be a loose connection somewhere.
4) To check if the wire is in good condition, remove the wire from the joint circled in red, and take a blade and carefully cut away the black cloth material protecting the wires.
5) Make a new connection if the wires are barely holding on or in my case completely broken. Your choice of soldering, butt connecting, etc.
https://photos.app.goo.gl/pJjPoxBJ8hMpgwb7A
Hope this helps.
EJ
Very common issue as the wires pass thru the wing hinge. After many up and down wing extensions, the wires fatigue and break.
Easy and $0 fix
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ealingj (06-03-2022)
04-20-2021, 10:13 PM
#60
Had this issue a couple of years ago and did wiring fix at left hinge. Cropped back up today, but my wiring at hinge looks okay. Checked for current: no 12v current when brake lights on (directly upstream of my wiring fix). Normal behavior from regular 3rd brake light. Light in spoiler works fine when 12v supplied directly. So any suggestions on why no current? I tried looking for 2-pin plug mentioned above but it was not under triangular Mobil 1 panel on right with larger connector. This is 2016 991S. Guess I have to trace these little wires, but not really thrilled to take rear end off again if somebody knows more than I do about this...