Electrical near Excelsior, San Francisco

What we diagnose

Almost anything electrical: check engine lights, ABS lights, airbag lights, hard starts, no-starts, parasitic battery drain, alternator and starter problems, intermittent stalling, communication errors between modules, immobilizer and key fob issues, and aftermarket installs that broke something.

• Check engine light diagnosis (all manufacturers)
• Parasitic battery drain testing
• Alternator and charging system testing
• Starter and ignition diagnostics
• CAN bus / module communication faults
• Wiring repair and connector replacement
• Aftermarket alarm and remote-start diagnosis

How we diagnose

We do not throw parts at problems. The first hour is diagnostic time. We read codes from every module on the car (not just the engine), test the actual circuit with a meter, and follow the wiring diagram. Once we have proven what is broken, we write you an estimate to fix it. Diagnostic time is billed transparently. You see what we charged for what.

Why electrical work is different

A new alternator does not fix a bad ground wire. A new battery does not fix a parasitic drain. Most electrical comebacks happen because someone replaced the symptom instead of the cause. We replace the cause.

What it costs

Diagnostic time runs by the hour and we set a cap up front so you are not surprised. Simple problems like a bad ground or a chafed wire we can find in 30 minutes. Complex intermittents on a CAN bus can take longer, but we will check in before we keep going.