
Alternator replacement
Charging system diagnostics
Alternator output testing
Battery and electrical system check
Alternator replacement and system verification
A failing alternator can cause battery drain, warning lights on the dashboard, and unstable electrical performance. The first step is always proper charging system diagnostics. Alternator replacement can vary depending on the vehicle's make and model. In many vehicles the alternator is easy to access, but in some cases additional components must be removed to complete the repair. In hybrid vehicles the charging system works differently, but issues in the 12-volt charging system can still lead to a drained auxiliary battery.