NHTSA Service Bulletin 10211146: 2021, 2022 Bentley Bentayga
Official manufacturer communication context for 2021, 2022 Bentley Bentayga, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.
Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.
Rear lamp electrical defect - Numerous DTC's evident. Customer statement / workshop findings - Rear lamp warning within the DIP - Numerous DTCs within diagnostic address 46 (J393) - Faulty rear lamp operation Refer to the examples below showing the most popular DTCs which have been evident in conjunction with the afore mentioned symptoms B11E913: Left rear turn signal bulb Open circuit B133413: Right Brake/Turn Signal Lamp Open circuit B16D5F4: Left tail light 2 turn signal lamp failure B12C213: Left Tail Light Lamp Open circuit B12C313: Right brake light bulb Open circuit B16D5F2: left tail lamp 2 Tail lamp faulty B16D7F1: Right rear tail lamp 2 LED faulty Technical background Should the symptoms described be evident please refer to the Measure section of this TPI
What this bulletin may mean before buying
Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.
Affected products listed in this communication
Buyer checklist
- Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
- Check recall campaign pages for safety actions that may require dealer repair.
- Compare this bulletin with common problem pages for the same model and component area.
- Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
- Use the used-car buying checklist and get an independent inspection.
Frequently asked questions
What is NHTSA service bulletin 10211146?
Rear lamp electrical defect - Numerous DTC's evident. Customer statement / workshop findings - Rear lamp warning within the DIP - Numerous DTCs within diagnostic address 46 (J393) - Faulty rear lamp operation Refer to the examples below showing the most popular DTCs which have been evident in conjunction with the afore mentioned symptoms B11E913: Left rear turn signal bulb Open circuit B133413: Right Brake/Turn.
Is a service bulletin the same as a recall?
No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.
How should a used-car buyer use this bulletin?
Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.
Check the exact VIN before you buy
Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.
Get Full Report