A diagnostic-first approach
The aim is to understand the fault before recommending costly work. We combine electronic diagnostics with system checks so that repair decisions are based on evidence rather than assumptions.
High-voltage diagnostics
EV battery & high-voltage diagnostics
Battery and high-voltage faults need specialist diagnosis. A warning light does not automatically mean an entire battery needs replacing, and changing parts before the cause is understood can become very expensive.
In detail
EV Battery & High-Voltage
AutoNet VIP can evaluate electric and hybrid high-voltage systems, identify faults and advise whether the next step is repair, component replacement or further specialist testing.
01 High-voltage diagnostic services
- High-voltage battery diagnostics
- High-voltage system evaluation
- Diagnostic reporting / certification where appropriate
- Battery management system (BMS) fault diagnosis
- High-voltage contactor and relay diagnosis
- Pyro-fuse diagnosis and replacement where applicable
- DC-DC converter diagnosis
- 12-volt system diagnosis
- High-voltage coolant pump diagnosis and replacement
- Charging and electrical fault investigation
02 When to book an EV battery diagnostic
- Battery or high-voltage warning on the dashboard
- Vehicle will not enter ready mode
- Charging fails or repeatedly stops
- Unexpected reduction in performance
- 12-volt battery repeatedly goes flat
- Cooling system warning
- You want an independent assessment of an existing diagnosis
- You need clarity before committing to a major battery repair
Battery replacement is not always the answer
Some high-voltage faults relate to supporting components, management electronics, relays, contactors, cooling systems or low-voltage supply rather than the complete battery pack. Accurate diagnosis helps identify the appropriate repair path.
High-voltage work across multiple brands
Our EV and hybrid support covers a broad range of manufacturers. For Tesla vehicles we also offer a dedicated battery and high-voltage service covering Model 3, Model Y, Model S and Model X.
Online booking
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