Electrical diagnosis and repair in Ottawa
Electrical faults are the ones that make people doubt themselves. Something works, then it does not, then it works again, and by the time the car is at a shop it is behaving perfectly.
We trace them properly: starting and charging, batteries, lighting, and the intermittent faults that need testing rather than guesswork.
What we work on
Battery, starting, and charging
Battery condition under load, alternator output, and the connections between them. A no-start can be any of the three, and they are not interchangeable.
Parasitic drain
A battery that is flat after the car sits for a few days usually means something is still drawing current after shutdown. Finding it is a process of measurement, not guesswork.
Lighting and signals
Headlights, tail lights, signals, and the switches, grounds, and connectors behind them.
Corroded connections and grounds
A large share of strange electrical behaviour in a salt-belt climate comes down to corrosion at a connector or a ground point rather than a failed component.
Symptoms worth bringing in
- The engine cranks slowly, or clicks and does not crank at all
- The battery goes flat when the car sits for a few days
- Headlights dim or brighten as engine speed changes
- The battery or charging warning light comes on
- Electrical accessories work intermittently, or several stop at once
- You have replaced the battery already and the problem came back
- A burning or hot-plastic smell: stop driving and call
Cold, salt, and electrical faults
Cold is brutal on batteries. A battery's available cranking power drops substantially as the temperature falls, at exactly the moment the engine needs more of it to turn over thickened oil. A battery that was merely weak in October is the reason the car will not start in January.
Road salt is the other half of it. Salt-laden slush finds its way into connectors, ground points, and wiring near the wheels and underbody, and corrosion there produces faults that come and go with temperature and vibration, the hardest kind to pin down.
Common questions
My car will not start. Is it the battery or the starter?
It could be either, or the alternator that failed to charge the battery, or a connection between them. A slow crank often points at the battery or its connections, and a single loud click with no crank often points at the starter, but those are starting points, not diagnoses. Testing tells you which, and it is quick.
I replaced the battery and it went flat again. What now?
That usually means the battery was a symptom rather than the cause. Either the charging system is not replacing what the car uses, or something is drawing current after you shut the vehicle off. Both are findable, and both need measurement rather than another battery.
Why do you charge to find an intermittent fault?
Because finding it is the hard part. An intermittent electrical fault can take real time with the vehicle to reproduce and trace, and that time is what stops you replacing parts on a hunch. Once it is found, the repair itself is often straightforward.
How long do car batteries last here?
Cold climates are hard on batteries and they generally do not last as long here as in milder places. Rather than going by age alone, have it tested before winter. A load test tells you what it can actually deliver now, which is the number that matters on a cold morning.
Related services
Auto Diagnostics
For noises, warning lights, and faults that need to be found before they are fixed.
Check Engine Light
We read the codes, then diagnose the actual cause rather than guessing at the part.
Scheduled Maintenance
Manufacturer-interval servicing, fluid flushes, and tune-ups.
Ready when you are
Book online or call the shop and tell us what the vehicle is doing.