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Any ideas? I have a new battery and a new starter, but when pressing the button or using the key fob, everything lights up, but then nothing. The pictures are that great, but here are the fault codes.. I will so that there is an issue with my door so I'm aware of that. Any advise would help. Thank you?
You post a bunch of P codes, but nothing is structured like one would expect from such as VCDS. Or are all of those actually from the J623 engine control module? The first pic doesn't look like J623 stuff, the rest do.
You post a bunch of P codes, but nothing is structured like one would expect from such as VCDS. Or are all of those actually from the J623 engine control module? The first pic doesn't look like J623 stuff, the rest do.
This is my car that's I've had for about 6 or 7 years now. I went out of town and my mom was driving. She called me and said it wouldn't start.
I am aware of the issues with the door. One of my clips broke and sometimes it loosens and causes issues. This is the first time I've ever had issues with it not starting.
It's not unheard of for one of the ECM related relays to go bad. In the engine bay, in the plenum chamber on the left end under the windshield washer fluid reservoir filler neck is the ECM box. Open that up and you'll see a bank of fuses and relays. I'd start there.
I made this for the B8.5 A4/A5, but it's going to be the general same for the Q5; they are all B8 vehicles.
Go to the battery and start by making sure posts C, D, and F (this fuse block is on the battery positive post) are all measuring 12v to the negative battery post. If so, then the three fuses are fine.
In the upper left of the diagram, you see the fuses in the ECM box. You see some are red (should always be 12v), some are blue (powered by the J757 relay), some are green (powered by the J271 relay). The J757 and J271 relays should be activated when you try to start the engine, and deactivate after the engine is turned off. One of your P codes implies one of the relay outputs seemed to turn off when it should have still be active. The 643 aka 645 relays, try swapping them with the ones from the right rear (the 12v sockets relay and the rear window defroster relay) and see if it now starts.
As long as that P1570 is active, you're not going to be starting that engine.
It would be nicer to have a full vehicle autoscan from VCDS.
12-24-2022, 12:47 PM
2013 Q5 lights up, won't start
