Andy Mac – Posted June 11, 2019
On 6/11/2019 at 9:54 PM, Stuart21UK said:
So some help from the informed and experienced would be appreciated…
I got in the car to move it earlier this morning and it started as normal, drove as normal BUT flagged a warning message that Auto Stop/Start was disabled and also the park assist back & front failed ot work at all….
I went to an appointment 10 miles away with the aut stop/start warning sill there and no other issues.
When I left the appointment 2 hours or so later and turned on the car it again gave me the same error….park assist not working and auto stop/start error…
More worryingly a half mile down the road the binnacle lights flashed all lights then went out completely, as did the PCM screen, the car continued to drive but also the lights (all exterior) were out too.
I cam home the 10 miles on the M1 and just before gettiing on it the lights came back on and again all other aspects of the car were fine.
Pulling up on the driveway I stop/started the car to try to replicate the problem (see video below)
in essence the car runs but there is a weird two tone horn sound when the ignition is switched on, the aut stop start fails, as does the park assist….
I’m aware dampness in the seat area can cause problems with the electrics (ECU under passenger side?) and sure enough the carpet under the passenger seat is damp…
I’m guessing water has got in and caused the problems??
Now the killer question WTF do I do to sort it out!?
Do I need to dry the area and how do I do so (does the seat have to come out?)
and why the weird beep sound, whats that about?
Symptoms sound similar to when my drain tubes failed (ones that run vertically down either side of the roll bar – I think they have a join in them and can become misaligned) in the 981S. My one affected the dash lights and oddly damaged the rear central brake light(?).
They (the drain tubes) can become dislodged / disconnected and mine leaked into the passenger side footwell / under the passenger seat.
Sure you’ll do it anyway – but get your hand under the passenger seat – right under -and down… the 981 uses a block (polystyrene?) to lift the electronics up away from the floor pan .. but a decent leak will still see them wet.
Think it can also be evident if you unravel the seat belt completely as that gets damp too?
Hoping both checks will see you dry and it’s something else. ** just re read that and you have dampness – FFS 🤦🏼♂️**
Once mine had dried out the electrical gremlins then manifested themselves / got worse …. whilst submerged they worked fine… (the condensation highlighted the issue for me).
When the OPC did mine the side panel (around air vent and sill cover) came off to access the drain tubes / correct that.
They then had the seat out and used a machine on the carpet to remove most of the moisture / sure they then told me that had been removed to dry/ before replacing any damaged components and wiring in my case (been submerged for a while).
As it’s been evidenced before I wonder if you’ll have any help from Porsche?
Great pics of the team effort on the wheels / cleaning… looks cracking on those wheels.