
CASE 001
BMW F10- VEHICLE
- BMW F10 - 535
- SYMPTOM
- No-start, warning lights appearing at random
- INITIAL ASSUMPTION BY OTHER WORKSHOP
- Battery, starter motor or alternator replacement
- TESTS PERFORMED
Voltage drop testing across the starting circuit
Oscilloscope capture of the ignition primary signal
Live data comparison under load
- ROOT CAUSE
- Normal wear and tear
- SOLUTION
- Alternator wiring high resistant - Wiring issue
- RESULT
- Rewiring of alternator - case closed
UNNECESSARY REPLACEMENT AVOIDED: $1,300
ACTUAL COST AND SAVING: $380













