aussiew

I have a 2015 Audi Q5 2.0T with about 72k miles. About 2 weeks ago the car wouldn't start (would crank but not start). After a few tries, got the car to start and drove fine. Ended up replacing the battery and no issues until about a week ago with the same problem. I drove, shut the car off at the destination, then went to leave about an hour later and the car would crank but not start. I tried for about 30 minutes and finally the car started. I will note that the car only has this issue after it has been driven somewhere and then trying to restart the car. No check engine lights are on. Any ideas? Have not had the car checked out yet by a mechanic.

silver_tt

HPFP but I would also check the timing chain

grego2000

My wife's 2015 Q5 has been experiencing the exact same crank but no start scenario. Began about a month ago - always after car has been running and turned off for a short time ( grocery store, church, restaurant, etc.) Car has been towed to shop 4 times now. High pressure fuel pump, regulator, and fuel pressure sensor have all been changed, all with no lasting effect on this problem. Just happened again this afternoon. Really need some advice on this one

silver_tt

Check the phase position

grego2000

Phase position related to camshaft?

silver_tt

Yes

sgenheimer

I have the same problem with my 2014 Q5. Did you ever figure out what was going on?

silver_tt

As already stated above, it's likely due to your timing chain being stretched. Depending on your mileage on a 2014 2.0T it is almost surely overdue. If it's not the timing chain the second thing to check would by your fuel delivery system, specifically the HPFP.

TL3

Hi aussiew, grego2000,

Did you get your car fixed? if yes, please let us know what fixed the issue. Thanks

TL3

The high pressure fuel pump was the culprit.