DI_a238
Low Severity
Tesla DI_a238 — Regenerative Braking Reduced
Drive Inverter (DI) alert — plain English explanation and what to do next
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System
Drive Inverter (DI)
Severity
Low Severity
Dealer visit
Not required
Affects models
All Models
What DI_a238 means
DI_a238 means regenerative braking has been temporarily reduced. In cold weather the battery cannot accept charge as quickly so regen is reduced. This is completely normal cold weather behavior.
What to do
✓ Entirely normal in cold weather. Leave extra following distance until regen returns as battery warms up.
1
Leave extra following distance — Reduced regen means longer stopping distance. Increase following distance.
2
Pre-condition battery — Use Tesla app to pre-condition battery 30-45 minutes before cold weather driving.
3
Drive gently to warm battery — Gentle driving for first few miles warms battery and restores full regen.
4
No action needed in cold — If only appears in cold temperatures no service required.
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