📞 Call 24/7: 07779 836677 / 07448 457247
⚠️ An HV leak fault means high voltage is escaping its insulated path. This is a serious safety issue and must be tested correctly before the vehicle is driven.
Mobile Lexus Hybrid HV Leak Check in Croydon
Lexus hybrid vehicles constantly monitor insulation resistance across the high-voltage system. When resistance drops due to moisture, corrosion, damaged wiring or internal component failure, the system triggers an HV leak or isolation fault.
We provide mobile HV leak testing and isolation diagnostics across Croydon, using correct safety procedures and insulation resistance testing — not guesswork.
Common Symptoms of an HV Leak Fault
- ⚠️ Hybrid System Malfunction warning
- ⚠️ “Check Hybrid System” message
- ⚠️ Vehicle refuses to enter READY mode
- ⚠️ Intermittent shutdown or limp mode
- ⚠️ HV isolation or safety fault codes
What Causes Lexus HV Leak Faults
- ✔ Moisture ingress in battery or inverter
- ✔ Coolant leaks affecting HV components
- ✔ Damaged or corroded HV cabling
- ✔ Inverter or compressor internal leakage
- ✔ Previous incorrect repairs
Lexus Hybrid Models Commonly Affected
- Lexus CT200h
- Lexus RX 400h / 450h
- Lexus NX Hybrid
- Lexus ES Hybrid
- Lexus GS Hybrid
⚠️ Replacing random parts without confirming insulation failure location can cause repeat HV faults and major expense. Proper leak isolation testing is essential.