"Buzzing" from Ignition and Brakes: Ford F-53
2012 Class A Winnebago Adventurer Ford F-53 V10: Two separate "buzzing" sounds. With the key in the ignition and before turning the key to start the motor, If the brake pedal is depressed, a bu...
Forum Discussion
The "buzzing" is completely normal. The electric pump runs under two conditions. One if the pedal is pressed with key off and two if the ignition is on but the engine isn't running. The second condition is important as it gives you braking assist if you are going down the road and the engine quits.
