Question When starting an engine: Answers The brakes will lock up. Warning lights should turn on, then quickly turn off. Coolant temperatures should decrease. Explanation After a vehicle is started, the warning lights and buzzers should go out after a few seconds. If the warning signals do not turn off, there may be something wrong with the vehicle. Take a FREE Practice Test Now This questions appears in the following tests: Alaska Knowledge Test Class A , Delaware Knowledge Test Class A , Michigan Knowledge Test Class A , Hawaii Knowledge Test Class B ,