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My Cayenne S 2008 won't start. I turn the ignition key and all I see is the Porsche (red) logo turn on and the mileage counter light turn on. Steering is locked, the head unit works and I can hear audio. Normally I would hear a click and then all the indicator lights would on and I would hear the soft beeps but now I don't hear anything. There is no steering / ignition faulty codes showing up on the dashboard.
Has anyone experienced this? Appreciate the help.
Good afternoon all,
This is my first post but want to start by thanking all who have shared there knowledge on other posts as it has allowed me to fix various items on my car.
looking for assistance before i take the car to the dealer. i think it is down to the mobilizer but not sure if there is something easy i am over looking.
currently have a no start / no crank condition. when i pulled the car out of winter storage it would crank slow but not start.
1) Replaced the battery, still no start. Then turned into no crank.
2) Replaced ignition switch, started and ran for 10 -15 minutes; but would not restart.
3) Have 12V to pin 30 of the starter relay when key turned to start. And if i short pin 85 (from DME) to ground it cranks but wont start.
4) Replaced Starter relay with a new one. Will "click" when key turned but not hold.
5) swapped the DME relay with another one. (read a post somewhere that this fixed a similar issue for someone)
6) bypassed clutch switch
7) very occasionally (1 out of 40 to 50 tries) car will fire up. this may coincide with having the battery disconnected for 30+ min first but is not guaranteed.
? removed the control unit under the seat and when open appears to be in good condition, no moisture / corrosion. 15 amp fuse confirmed good.
9) checked all fuses in driver foot well, no issues found.
have tried both keys with the same results.
At this point i think either the immobilizer or ECU are the problem but do not have an appropriate scan tool for either of these.
can any of you recommend something i should try before going to the dealer?
By Christiaan Poortman
Hello, I'm new on this forum and stumbled upon a new problem (or old) with my 2.5l 986 Boxster from 1997.
The problem occurs when the engine is started dead cold after sitting a few hours/overnight.
Engine starts immediately but the RPMs start to surge / hunt between 1100 and 700 RPM. This continues for about 10 seconds after which the idle smoothes out to the normal cold idle RPM.
The first pull away requires a tad more throttle then normal to prevent stalling. After this first pull, everything is almost normal and engine performance becomes better and better. When the engine is hot, the idle sits at 780 RPM with a minor fluctuation now and then (seems to be more than normal)
I've been to two shops (official Porsche dealer and local Porsche specialist). Porsche dealer couldn't find anything and the specialist found the camshaft sensor on the left bank to be unplugged - but now comes the strange thing - the cabling is nowhere to be found!!!!!!? Took the car home to check myself but didn't find anything.
No camshaft related codes to be found in the diagnosis and no CEL either.
Attached one pic showing the sensor and it's missing plug
Could someone help me out? - Is it possible for the engine not to throw a CEL when sensor is disconnected? - where is the sensor wire to be found?
(60,000km on the odometer) Now the car is completely dead with no Interior lights anywhere. Car was sitting there with a charger on timer charging for maybe an hour per day for a month while I was on vacation. The CD/radio was making a clicking sound prior to and I thought the battery needs a boost to start after a month. Now nothing!
Well almost nothing - behind the dash board there is some very weak clicking/sound.
Thought I ask here first - before towing it to the Porsche dealership. ?