Repairs — Alternator Replacement
A dying alternator strands you slowly, then all at once. This is a classic mobile repair.
Typical: $305–$620 — done in your drivewaycharging system
The battery warning light flickers at idle. Headlights dim when the blower's on. The battery you replaced six months ago is dead again — because the alternator was the real patient all along, and a new battery just bought it time. Left alone, a failing alternator finishes the job at the least convenient moment possible: the car simply runs out of electricity and stops.
The good news: alternator replacement is close to the perfect driveway repair. It's accessible on most vehicles, it doesn't need a lift, and doing it at your home means a car with a suspect charging system never has to be driven anywhere — which matters, because a car that dies en route to a shop adds a tow bill to the repair.
On classics, we'll also talk options: many vintage alternators and generators can be rebuilt rather than replaced — often cheaper, and it keeps the original unit with the car. That's the rebuild-over-replace judgment we practice.
Built from our published labor rate of $125–135/hr and a typical parts range for this job. Adjust the hours if you know your vehicle runs easier or harder than typical.
Typical range for common vehicles. Parts vary by make and model; classics may differ. Final quote after diagnosis — approved by you before work begins.
On the Olympic Peninsula, alternator replacement typically runs $305–$620: 1–2 hours of labor at our published $125–135/hr rate plus roughly $180–$350 in parts for common vehicles. The repair is done at your home — travel is included in scheduled repair visits — and the final quote is approved by you after diagnosis, before work begins.
Not far. Once the alternator stops charging, the car runs on battery alone — typically 30 minutes to an hour before everything shuts down. This is exactly the situation mobile repair exists for: we come to the car, so a weak charging system never has to survive a drive to a shop.
See all our repair cost guides, the full pricing policy, or start with a $125 mobile diagnostic if you're not sure this is your problem.