As of August 23, 2022, the Product Improvement Campaign has ended
Acura technical service bulletin B21-029 for 2019-2021 Acura RDX.
- Bulletin number
- B21-029
- Component
- Electrical system
- Summary
- Service bulletin - As of August 23, 2022, the Product Improvement Campaign has ended. The TCU can no longer be updated using Over The Air updates. If the customer needs to restore TCU services, the only option is to replace the TCU. This would be done as a customer pay repair.
Owners of these vehicles have filed 76 complaints in the electrical category.
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