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Car won't turn off
January 07, 2019, 05:20 PM
08 CayenneCar won't turn off
Just got rear-ended, limped the car home but now it will not shut off. It's keyless. Lift a lead off the battery? Porsche Macan
January 07, 2019, 05:24 PM
sigmonkeyPull the fuse for the fuel pump.
Make and model? (I can look up what fuse(s) can be pulled).
"the meaning of life, is to give life meaning" ✡ Ani Yehudi אני יהודי Le'olam lo shuv לעולם לא שוב! January 07, 2019, 05:33 PM
08 Cayennethanks 2018 Porsche macan
January 07, 2019, 05:35 PM
Blue DogDamn, Hope you're OK
January 07, 2019, 05:36 PM
08 Cayenneheads thumping pretty good
January 07, 2019, 05:49 PM
sigmonkeyUnable to find the information online, (quickly).
Do you know where the fuse/relay compartments are?
Typically the engine/fuel relays and fuses will be in a plastic enclosure in the engine compartment.
The others are often on the forward part of the dash with the driver's door opened.
"the meaning of life, is to give life meaning" ✡ Ani Yehudi אני יהודי Le'olam lo shuv לעולם לא שוב! January 07, 2019, 05:55 PM
honestlouIf you can get to the battery, pull the ground wire. Everything in the car is dead if the ground is pulled. You could pull everything off of the positive post, but typically there is more there and could be a little more work. Either will do.
With great respect to the Monkey, I wouldn't suggest just killing the fuel pump. That will certainly stop the car from running, but if the ignition is still on you're at risk for harming other circuits and in a worse case scenario a fire starting.
January 07, 2019, 05:57 PM
ffips10mm to be sure.
Hope you mend soon.
January 07, 2019, 05:59 PM
sigmonkeyquote:
Originally posted by honestlou:
If you can get to the battery, pull the ground wire. Everything in the car is dead if the ground is pulled. You could pull everything off of the positive post, but typically there is more there and could be a little more work. Either will do.
With great respect to the Monkey, I wouldn't suggest just killing the fuel pump. That will certainly stop the car from running, but if the ignition is still on you're at risk for harming other circuits and in a worse case scenario a fire starting.
Disconnecting the battery after it shuts down. I assumed OP would do that.
"the meaning of life, is to give life meaning" ✡ Ani Yehudi אני יהודי Le'olam lo shuv לעולם לא שוב! January 07, 2019, 06:05 PM
honestlouI just saw that the battery is under the spare tire in the back, and the main fuses are behind a panel in the right rear of the cargo area. Being hit from behind, I hope you have access. It looks like there is another fuse panel behind trim on the left side of the drivers side dash-area exposed when the door is open.
January 07, 2019, 06:25 PM
08 CayenneI was hit directly in the right rear. I took both terminals off the battery and its still running.
January 07, 2019, 06:30 PM
08 CayenneHow long would the terminals need to be disconnected before it shuts down.
January 07, 2019, 06:36 PM
GaryBFquote:
Originally posted by 08 Cayenne:
How long would the terminals need to be disconnected before it shuts down.
How much fuel is in the tank?
January 07, 2019, 06:45 PM
a1abdjSounds like it's possessed. Some vehicles will run with the battery disconnected because the alternator is still providing power. I'd pull power to the fuel pump next and see what happens.
January 07, 2019, 06:48 PM
kimber1911User Manual has this note:
DANGER: Replacing fuses or relays with the engine running or the ignition on could cause electrical shock.
Always switch off the engine and the ignition when working on the electrical system.
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“Let’s go, Brandon” Kelli Stavast, 2 Oct. 2021 January 07, 2019, 06:53 PM
egregore It will stop running, all right … after the alternator and who knows what else goes up in smoke. Is a fuse box accessible? Find a main or fuel pump fuse or relay and pull that, or if the engine computer is accessible at all, disconnect it. If the ignition is still on after it shuts off,
then you can disconnect the battery. The electrical system may not like those voltage spikes either, but if any damage is done, it will be a lot less and easier to fix than a smoked alternator and wiring harness.
January 07, 2019, 06:58 PM
shiftyvtecIf all else fails, pull the intake plenum and starve the engine of air. If your not careful damage may ensue. Your puel pump may continue to run but I would think the ECM would see this and kill the ignition/fuel pump without the engine rotating.
Fuel pump relay or fuse would be the safest bet.
January 07, 2019, 07:05 PM
MuddflapWon't help the OP, but I thought there was a relay, in the fuel pump circuit, that would trip in the event of a wreck.
January 07, 2019, 07:16 PM
08 CayenneThank you everyone for trying to help.
The fuse box is crushed, many broken wires and connection.
I talked to my dealership until they closed then they dissed me, useless. Called a West Coast dealership and they had no clue either. I could not find a fuse for the fuel pump but I pulled the ignition pathway fuse and it stopped. What a cluster. Thanks again.
January 07, 2019, 07:21 PM
sigmonkeyHope your melon feels better soon.
Get the to the Doctor.
"the meaning of life, is to give life meaning" ✡ Ani Yehudi אני יהודי Le'olam lo shuv לעולם לא שוב!