good day! to the people of volvoforums just wondering if any one had the same problem.When im driving in a bumpy road or using my horn just suddenly it turn off my engine or sometime it show the arrow. possible for a loose relay? any suggestion? any location of the relay? thanks!

Best
Manuel

 

I would check for loose grounding or battery terminals first.

 

Thats where I would head...sounds like a ground problem

 

thank you guys for the time i will check it right away.

 

Check the wiring to the Gray relay on top of the radiator.