Hi, I have noticed that my P400 when I lock it, a fan in the car comes on, the moment I open any door other than the back one it stops. Any suggestions for me?

 

Sounds similar to what happened to my P300. My fan wouldn’t stop unless I turned on the ignition. In the end it was in the shop for 2 1/2 months while my dealership worked with Land Rover in the UK to figure it out. Ended up being part of the wiring harness had corrosion and had to be replaced.

Good luck on getting this solved. I’ve had mine in the shop 3 times this year, all for electrical issues.