Hyundai TSB #24-AT-001H

2021 Hyundai Sonata

TSB Document:

Affected Component: POWER TRAIN

Summary
This bulletin provides the procedure for updating the automatic transmission TCU and ECU software (Santa Fe ONLY) to improve shift quality, judder with ISG enabled and hesitation when accelerating.

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Date Published
FEB 28, 2024
NHTSA TSB #
10251293
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