Audi A4 2004 2L starts cold perfectly. Won’t crank after short drive

Asked by May 14, 2019 at 05:35 AM about the 2004 Audi A4

Question type: Maintenance & Repair

My Audi A4 2004 2L starts cold perfectly. Won’t
crank after short drive and the engine gotten hot.
Left to cool down a few hours it then starts no
problem. When the car is going to start we notice
that the message on the dash consol changes
from when it’s not going to crank. The message in
red writing to have foot on brake when changing
from park indicates that the car will start. However
orange letters OK appear every time just before it
won’t start. We also notice the red foot light next to
the selector lever is lit when fine and not lit when
not working. Also notice the dash display doesn’t
light up the park or neutral lights when faulty but
does light up when cold and working fine. This
happens every drive that’s over 5-10 min. We can
drive for hours no problem but as soon as we stop
we cannot restart. Also we tried leaving the car
running as a test. It’s fine if left in drive however if
leave in park or neutral then the selector lever gets
stuck in position and the car needs to be turned
off to move the lever again therefore meaning
hours to cool down.

1 Answer

71,815

A car that starts cold but won't start hot has a fuel or electrical problem; really could be either. It could be leaking fuel injectors flooding a hot engine. It could be a bad sensor: crankshaft position, cam position, or maybe even the engine coolant temperature. Might even involve ignition components, such as coil or igniter. With your description, though, it seems that you have more problems than that. You probably have a defective brake-shift solenoid, a transmission selector problem. Without actually seeing the car, it's not possible to say what the exact problems are. Why don't you take the car to a mechanic to diagnose. Or go to an auto parts store to get codes read and they probably won't charge you for this.

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