Today's trucks depend on electronics for almost everything, from starting the engine and controlling the transmission to lights, gauges and safety systems. One bad connection can cause a no-start, warning lights across the dash or a failed inspection.
Polstar Truck Repairs tracks down electrical problems methodically. We use diagnostic tools and testing to find the exact wire, connector, sensor or module that's failing, rather than replacing parts until the problem goes away.
Whether it's a dead battery, a starter that won't crank or a lighting fault on your trailer, we'll get your electrical system working reliably again.
Don't wait for a breakdown. Bring your truck in if you notice any of these:
Slow cranking or clicking when you turn the key points to the battery, starter or cables.
Batteries that won't hold a charge can mean a failing alternator or something draining power while parked.
Dim, flickering or dead lights are a safety risk and a common inspection failure.
Several warning lights at once often come from a wiring or grounding fault, not several separate failures.
Issues that come and go are usually caused by loose, corroded or damaged connections.
A burning plastic smell can mean overheated wiring. Stop and get it checked immediately.
We work on trucks from all over Ontario, plus long-haul trucks from across Canada and the US passing through the GTA. Bring your truck to our Mississauga shop for electrical systems.
Common causes are a weak alternator, old batteries, corroded connections or something drawing power while the truck is parked. We test the whole charging system to find the cause.
Yes. Intermittent faults take patience, but we test the wiring, connectors and grounds on the affected circuit until we find the problem.
Yes. We repair trailer lighting, plugs and wiring so your rig is safe and ready for inspection.
It depends on the warning. Some affect safety systems like brakes or engine protection. Call us and describe the lights you're seeing, and we'll tell you whether it's safe to bring the truck in.
