1. When did the problem first occur? after accident, after offroad driving, after flood or heavy rain, after previous repair work or modifications

2. What steps have been taken to rectify the issue so far, any parts replaced or workshops visited, has the vehicles wiring been tested before the part was suspected to be at fault

3. How can the fault be reproduced? when hot, cold, cornering, accelerating, hills

4. How often does the fault occur? intermittent / permanent