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Certain high-voltage (HV) battery cell modules may have an internal connection used to monitor battery...

Audi technical service bulletin Circular 93RA for 2025 Audi Q4 E-Tron and 2025 Audi Q4 Sportback E-Tron.

Bulletin number
Circular 93RA (93RA)
Component
Unknown or other
Summary
Certain high-voltage (HV) battery cell modules may have an internal connection used to monitor battery voltage that may not have been adequately welded due to a manufacturing issue. If this condition is present, the battery monitoring system may display incorrect readings. Owners may notice a yellow or red warning light, along with related error messages being displayed on the instrument panel. To correct this, the affected HV battery cell module(s) will be replaced.

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