Battery Thermal Excursion Safety Limit Reached
The thermal control framework has tracked extreme, dangerous peak temperature numbers within the main high-voltage battery array blocks. The car will lock open safety contactor blocks and stop all driving or high-power fast charging loops to eliminate battery fires.
Estimated Cost
$2,450
Repair Time
Dealer visit required
Difficulty
Dealer Only
Can I Fix This Myself?
Professional Service Recommended
This repair involves high-voltage components or specialized equipment.
What professionals will use:
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Step-by-Step Fix Instructions
- 1
Park the vehicle in an open safe outdoor area away from structures and let it sit undisturbed to cool for an hour.
- 2
Peer beneath the under-chassis belly plates to look for active dripping leaks of blue, green, or pink battery cooling liquids.
- 3
Hook up a professional data logging scanner to verify if a single temperature sensor wire has broken and reads erratically.
- 4
Perform an automated cooling loop air purge sequence using diagnostic software to clear trapped air pockets.
- 5
Unbolt the front bumper trim sections to inspect the primary electric air-conditioning compressor and coolant pumps.
- 6
Lower the main battery pack enclosure to replace faulty internal thermistor arrays or repair cracked internal fluid circulation channels.
Check Your Warranty Before Paying
Federal law requires EV battery warranty coverage for 8 years / 100,000 miles minimum. Many manufacturers offer 10-year coverage. An authorized dealership can confirm coverage for your VIN at no charge.
Step-by-Step Diagnostic Wizard
Answer each question to narrow down the root cause of your THC_a102 fault.
No step-by-step guide yet for THC_a102
We're still writing the diagnostic flow for this code.
An EV specialist can run a live diagnosis in 15–30 minutes and give you a firm repair quote.
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