Q7 TDI would not start after ride

Question edited for clarity, year make model.
Question moved to Audi Q7.

Audi Q7 (4L; 2007-2015) fuses and relays

https://fuse-box.info > audi > audi-q7-4l-2007-2015-fu...
Here you will find fuse box diagrams of Audi Q7 2007, 2008, 2009, 2010, ... Assignment of the fuses and relays in the engine compartment (diesel engine) ...

Fuse box diagram Audi Q7 and relay with assignment and ...

https://fuseandrelay.com > audi > q7
Description of fuse boxes and relays Audi Q7, their locations and diagrams. ... V12 TDI: Coolant circulation relay after off. engine -J151- (V6 FSI from ...
‎Passenger compartment · ‎Front right fuse box · ‎Relay and fuse box in the...

Fuses and relay Audi Q7

https://fusesdiagram.com > audi > fuses-and-relay-audi-...
For the Audi Q7 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 model year. Cigarette lighter fuse - (fuse box in Right cockp it : fuse panel, fuse ? ...

https://www.700r4transmissionhq.com/audi-q7-bad-fuel-pump-symptoms/

hi Alex.
see if this helps you to find it.
Where is the crankshaft position sensor is located on audi q7 2007 Google...
not sure if this youtube one will help but have a look.
2007 AUDI Crankshaft Position Sensor Replacement
if none of the above is any use to you then try this link .
Where is the crankshaft position sensor is located on audi q7 2007 Google...

sounds like a u-joint in the drive line.

RUN the scanner/computer for better diagnostic. the BCM can be faulty, need to make mayor TUNE UP , and need reliability in your vehicle,.the electronic tech now is very complicated.do not waste your time and money.
God bless you

you have a short somewhere, it sounds like a wire is touching something and is shorting out everything just check your wires and make sure they all are connected properly hope that helps

COULD BE FAULTY GLOW PLUG WARNING LIGHT.

Audi Q7 3.0 TDI - MY 2009
The Service Interval Indicator can only be reset with the VAS 5051 or similar diagnostic tool connected to the data link connector of the car.

You need to have a fault scan to see exactly what triggered light. Autozone, Advance, etc parts stores can do that for you free.

Hi again,

This link might provide you with some of the images for the engine component locations. You would be interested with the fuel lines going into the Common Rail Injection System as they would be providing the inflow of diesel fuel to the high pressure pump for the injectors. Additionally, you might find this page an interesting read with illustrations.

My apologies that I can not email you directly due to certain restrictions.

Good luck again.