V40 complete lose of coms in hot weather

Mrgbell01 · Jul 17th, 2022, 15:28

Hi hope some one can assist. I’ve read a few comments that seem to fit but no complete answers. My wife’s d2 v40 looses all coms in hot weather after about 30mins of driving. Air con and cruise control are 1st to go. Then slowly all systems seem to shut down no speedo, indicators, gear indication, engine temp, every warning and system issues are raised. Speedo and engine temp along with gear position comes on and off each time they come back I get a boost in power.
Once stopped the engine won’t switch off or won’t restart.
I was once a ford tech but 15years ago so I have a small amount on knowledge. I’ve totally unplugged the CEM and replugged to find that all systems boot back up and all is fine for a bit then all systems go again.
My thinking is that the CEM is over heating in the hot weather as I don’t seem to have the problem on colder / winter days
I’ve not noticed a leak in the car but as the car is black and in the sun is super hot inside it could be causing a condensation issue. I’m not overly convinced with my theory though.
Any help will be appreciated
Graham

Jul 17th, 2022, 15:28	#1
Mrgbell01 Mrgbell Last Online: Aug 10th, 2022 11:25 Join Date: Jul 2022 Location: Poole	V40 complete lose of coms in hot weather Hi hope some one can assist. I’ve read a few comments that seem to fit but no complete answers. My wife’s d2 v40 looses all coms in hot weather after about 30mins of driving. Air con and cruise control are 1st to go. Then slowly all systems seem to shut down no speedo, indicators, gear indication, engine temp, every warning and system issues are raised. Speedo and engine temp along with gear position comes on and off each time they come back I get a boost in power. Once stopped the engine won’t switch off or won’t restart. I was once a ford tech but 15years ago so I have a small amount on knowledge. I’ve totally unplugged the CEM and replugged to find that all systems boot back up and all is fine for a bit then all systems go again. My thinking is that the CEM is over heating in the hot weather as I don’t seem to have the problem on colder / winter days I’ve not noticed a leak in the car but as the car is black and in the sun is super hot inside it could be causing a condensation issue. I’m not overly convinced with my theory though. Any help will be appreciated Graham

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)