Windscreen wiper motors for trucks and commercial vehicles
The wiper motor drives the wiper linkage across the windscreen and is the most common point of failure in an HGV wiper system. Symptoms include a wiper that moves slowly, stalls under load, or fails to park correctly. Most HGV wiper motors are 24V systems rather than the 12V units found in passenger vehicles, so confirm the voltage specification before ordering.
Wiper motor failure on commercial vehicles is often preceded by increased load on the mechanism, caused by worn wiper linkage bushes or a kinked drive cable. Replacing the motor without addressing linkage wear can lead to premature failure of the new unit. Where wiper performance has degraded over time rather than failed suddenly, inspect the full linkage and drive cable before condemning the motor alone.
We stock wiper motors for the major European HGV makes. Call our team with your make, model and cab type to confirm the correct unit. UK nationwide delivery or same-day collection from our Midlands branches.
Frequently asked questions
How do I diagnose a faulty HGV wiper motor?
First confirm the wiper fuse and relay are intact. If the fuse is sound, test for voltage at the motor connector with the wiper switched on. No voltage indicates a wiring or switch fault upstream. Voltage present but no motor movement indicates a failed motor. A motor that runs but moves the wiper slowly or stalls under load may have a failing armature or be working against a seized linkage.
Are HGV wiper motors 12V or 24V?
The majority of HGV wiper motors are 24V, matching the standard electrical system voltage of most commercial vehicles. Some light commercial and van applications use 12V. Always confirm the voltage specification from your vehicle documentation or existing motor label before ordering a replacement.
Do I need to replace the wiper linkage at the same time as the motor?
Not always, but it is worth inspecting the linkage when replacing the motor. Worn linkage bushes or a kinked drive cable increase the load on the motor and can cause premature failure. If the linkage shows wear or stiffness, replace it alongside the motor to avoid a repeat failure.
