2013 Q7 TDI won't start in cold - help a rookie
New to diesel engines. Need help.
It's -7 before wind chill in Michigan today. Took my car (2013 Q7 TDI with <3k miles,full tank of diesel) out of the balmy 30 degree garage at 5:30am. Went to work, parked outside. Drove around at 1pm for 20 minutes. 6 hours later went back out to trouble. Electronics come on, car turns over, RPM's hit 1k briefly and car shuts down. Over an over. I got a low battery warning. Hooked up jumper cables to a v8 truck for a bit, same response, but also got a new indicator on dash showing image of vehicle with red hood. Gave up, left car and bummed a ride home.
What's up? Too cold for diesel? Too cold for any car?
Only other observation is that doesn't seem like you can crank on it excessively like you could a old gasser. The electronics crank briefly and stop.
I appreciate any thoughts/comments.