All Left rear Lights Gone MIA: "Left rear fot light defective" message

[Fun TC Driving]

Got the car late last night after its cross country journey. THRILLED with it! Went for a fantastic drive to the Oregon Coast. What a precise FUN-mobile! All went perfectly for the drive over there (70 miles); perfect 60 degree F sunny day. Then did a 15 minutes a DCFC charge there to insure we could — that the Plug and Play Cert wokred as it should. SUCCESS!

Then after starting out driving home, after ten minutes in the drive, the following warnings came up one after another within 30 seconds. All left side rear lights died. Rest of the car remained a dream.

After a 15 minute break on the way home for handmade ice cream, all the warnings went away and the light functioned perfectly again — well for first 20 minutes and then again all dead with the same warning notices.

Did something cool during the brak, but re-heated and caused them to re-die again? Any ideas as to what part failed to cause them all to die?

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[tmrqs]

Are they actually out of commission (when stopped looking at the lights/turn signals) or is it just a warning on the dashboard?

 

[Fun TC Driving]

Good point. I have not checked them all but I visually checked and confirmed that the fog light is dead and the left turn signal light is also not working .Also, we remember how when we our turn signals were actual light bulbs years ago, and when one went out the other one on that side of the car then blinked twice as fast. Another confirmation of the dead rear, left-side turn signal light.

Will be checking the brake and the tail lights themselves later tonight, Thanks.

 

[JonoNZ]

Check the fuse box for badly seated fuses?

 

[Fun TC Driving]

For more than just fuses. Far more than just 1/4 of the car’s lights going one and off… Here is our baby now:

Since I last posted our now 1,732 mile CPO (which again we just received 34 hours before) and had been such fun during that short time, this morning it went into full blown electronics/software meltdown. Starting simply as when I walked up to it, it failed to Auto Unlock the doors. Tried the other key fob. Nothing happened. Took a click on the key fob unlock button to open the car. Then when I got in and it auto started, it failed to remember my name on the top of the PCM screen. I then observed several other some failures as I pulled up previously-set things. The door mirrors would not fold back out. Most alarming was the it forgot our home AutoLift location (one trip in or out of our steep-aproned driveway transitioning in or out without full lift would mean a smashed front splitter or worse) — again it had remembered this Auto Lift location just yesterday when I first set it. Then it refused to lift up when I placed it in Off Road status — at least the first two times but when it did on the dash it visually showed it at its lowered position. Then it finally went up but would not come down even when I saw, again on the dash, it was getting lower. Nor would it re-set our currrent location (had moved it into the street at the perfect placement to enhance its chance to set/save our needed AL function. Now I was getting stressed.

When I next realized that more than a few of my other PCM settings were also no longer stored (other things that had worked on and set yesterday), I called the U.S. Porsche Tech Service phone {800) 767-7243} For over 1 hour 20 minutes we tried everything, but victories, while few were only sometimes temporary — e.g. a disappearance of one setting we had just re-set ten minutes before. He advised a trip to the dealership. We both discussed and agreed that the first place for their look at fixing it was probably electronic intermittency caused by a bad 12V battery cell or similar.

Damn, our new beautiful baby which we had just delivered 34 hours before, was going into full meltdown.

However, next came some initial positives. I called the Porsche dealership who said if I could get there within an hour they would look at my car immediately Still stuck at its Off Road height, he Porsche Tech Advisor said I could drive it the 33 miles to the dealership at a reasonable pace without damaging the car, OR, more than likely once I started driving it would lower itself.

Thankfully it did lower itself perhaps a block away when I got up to around 20 MPH. On the trip to the dealership (identical way we go to our daughter’s), I went throught a several mile country curvy, hilly stretch, e.g., a Porsche road. No one was on it this morning; pavement was dry. I put it into Sports Plus and two corners I used to take in my iX M60 at 33 and 43 MPH, I took this time at 42 and 51 MPH respectively — not even going full tilt. It was cornering so beautifully; inspiring handling confidence. Damn, I was smiling big time. This is a great, SPORTY vehicle. BIG FUN! This is the EV I always wanted (Taycan out due to my wife’s advanced arthritis).

Treated like royalty at the Porsche dealership. Never before been at a Porsche dealership as a service customer. Within five minutes (the usual SA walk around and similar), and yet all the time the SA was LISTENING INTENTLY to what I was recounting and what were my thoughts and suggestions, she said turning to an assistant after texting to someone else, “Tech X is ready to receive it in his work bay, will do a 12V battery test as a starter,” then turning back to me asked if I wanted to stay while they determined if that was the problem and if so they would put in a new battery and I could drive it home, or if they found something else they would give me a loner, and then shocked me by her APOLOGIZING, saying, “I am sorry we just gave out the last Macan EV loaner last night, but I have that almost new white Cayenne right outside which would be your loaner if your car needs more than the new battery.” I was impressed with their immediate plan of action.

40 minutes later she found me and said, “SORRY BUT IT IS NOT YOUR 12V BATTERY BUT IT NEEDS A BRAND NEW RECALL FOR A “SOFTWARE EXTENSION” AND ALSO SEVEN (7) CONTROL MODULE UPDATES. {Was originally put into service at the Atlanta Corporate headquarters on August 24th last year so an early, early made one.}

While driving away I was literally very sad leaving my new baby behind, but the Cayenne was more than okay to drive, and then every time I thought of how spiritedly I was able to drive our Macan EV through the twisties on the way there, I would smile some more.

So a time out for a while.

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