Wiper Motor Repair & Replacement

Wiper Motor Repair
Wiper Motor Repair — when the windshield wipers start to show signs of functionality loss, such as slow operation or intermittent movement, then it’s time to take a closer look at your wiper motors. Wiper motors often fail due to normal wear and tear during the lifetime of the vehicle.

Windshield wipers are a safety item that calls for immediate attention when malfunctioning. If you smell or see smoke coming from the motors, then it is definitely time to perform a little maintenance on your wiper motors.

Replacement
Sometimes the only solution to bad wiper motors is to simply remove and replace. If your motor is burned out or shorted then there is no use trying to disassemble and fix it. A more cost effective method is to buy new motors and install them. Be sure to check your owner’s manual to properly locate the old wiper motors.

Replacement is not difficult, and usually only requires a few tools such as a socket wrench, sockets, and screwdrivers. After a few turns of a wrench and a couple of connections, you can be on your way to new and fully functioning wipers.

Troubleshooting and Repair
Not all broken wiper motors require a full replacement. New motors can be costly, and if you are on a budget then it is certainly worth the effort of repair or at least a good diagnosis.

If your wipers are completely unresponsive then you may have a wiring issue. A test light is a good tool when inspecting for proper connections. Remove the connector to the wiper motor. Turn windshield wiper selector on and insert the point of the test light into the connector receptacle. If the test light turns on, then you have power. Run this check for all wiper settings. You can also use the test light to check the ground side of the motor. Once you have checked all circuits, you have completed your diagnosis.

If your wipers are moving slower than they usually do, there may be a binding in the linkage from the motor to the wiper arm. Visually check all the mechanical connection for proper freedom of movement. Remove any blockage and loosen any binding.

If your wipers are not moving at all on certain speeds, then you may have an electrical problem. A good place to start is the wiper fuse. If the fuse is burnt, then you will need to replace it. The fuse itself may have lived out its life but it’s possible you have an electrical short in your wiring. If you do then this will only cause your new fuse to burn out again. Your car service manual should have diagnostic information regarding electrical issues.

If you hear a humming sound and the wiper motor is hot to the touch, then the wiper blades may have been incorrectly installed causing the linkage to jam. Try removing the blades and reattaching them. There may also be a jam in the linkage. If the wiper is not causing the problem, try replacing the linkage.