I had my relay valve replaced at the dealership the other day. Now my air warning lights flicker, when I hook up to a trailer. Sometimes it will come on when I hit a bump. But, when I get rolling it doesn’t come on. It’s not leaking air. My air Pressure is normal. Could replacing the relay valve caused this problem? 2006 9400.
Air warning light comes on after replacing Relay Valve.
Discussion in 'International Forum' started by rickybobby, Aug 20, 2018.