The headlights should also be properly aligned to prevent inflicting the driver of the offcoming car an accident or hinder visibility on the road. Headlights should be checked at least once every 12 months and any time there is addition of either new headlight, or any work done around the front end of the car's body. The following procedure offers only a temporary fix until a shop that possesses the suitable tools can make the alteration. Start from the state when the car stands with no inclination on any side, the full tank of the gas, and no overburden. Every headlight housing features one adjustment screw-at the rear-and implies that the headlight can only be adjusted vertically. If for instance the housing of the headlight has been changed or the car has received a front impact, then there is a certain procedure that should be followed. This method requires a blank wall and a level floor and masking tape. Tape along the wall first horizontally to represent the centre of the vehicle and vertically from the top of the vehicle headlight line to the bottom of the headlight uniformly placing the masking tape vertically with regard to the headlight centerline of the whole vehicle and horizontally as well with some distance between the vehicle and the wall which may be a few inches only. It should be parked 25 feet away from the wall and leveled, with half a tank of gas and without load. For low beam adjustment the high-intensity zone will be two inches below the horizontal axis and two inches to the side of the head light vertical axis away from the oncoming traffic. Thus, with the high beams on, the high-intensity zone should be aligned to the middle of the column, below the horizontal line. Due to the constraint in achieving perfect position of both high and low beams, it will be advisable to focus largely on low beams for safety's sake. Get the alignment of the headlights done as soon as possible by a dealer service department or at a service station.
