This sounds like a CEM or CEM related problem like a bad CAN connection. First thing would be to disconnect the battery and remove the CEM for a visual inspection. Look for water damage or corrosion. If none, clean the main connector and pins with electrical circuit cleaner. If this does not work, ...

We will check this out. It's just strange that the issue only happens when it hot out or on long drives, not when it rains, but it's still worth looking at.

But what is the physical clunk? Is that door ajar warning possibly related to it somehow releasing the hatch lock? I'm wild guessing here. No doors or the rear hatch are actually opened or released. I think the clunk is the transmission to be honest. But I'm not positive. When this happens it sets ...

This sounds like a CEM or CEM related problem like a bad CAN connection. First thing would be to disconnect the battery and remove the CEM for a visual inspection. Look for water damage or corrosion. If none, clean the main connector and pins with electrical circuit cleaner. If this does not work, ...

I have a 2004 Volvo V70R. When we go on long trips there are times where we hear a loud clunk/bang that is very startling, then the wipers will wipe once, the dome lights come on and it says rear door ajar. If we continue driving, the loud clunk/bang will happen again, the dome light goes off and th...