NHTSA Service Bulletin 10186734: 2018-2021 Bentley Continental
Official manufacturer communication context for 2018-2021 Bentley Continental, 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.
Headlamp switch - Inoperative/Not illuminated - DTC U110B00 within 09-Central Electrics (BCM1). Customer statement: Headlamp switch - Inoperative/Not illuminated Workshop findings - DTC U110B00 within 09-Central Electrics (BCM1) as shown in Figure 1 Figure 1 - Yellow warning light/message within the DIP (Adaptive Lighting Fault) NOTE: Some lighting functionalities can in some cases be lost for example: - Rear fog light activation - All weather lighting mode activation - Headlamps default to dipped beam however high beam will still activate manually NOTE: Recycling the ignition will not resolve the problem Technical background: The issue will not occur when the ignition is on and/or the vehicle is being driven. It occurs as the headlamp switch goes into a sleep state after ignition is Switched OFF, the issue is then evident to the driver when the ignition is next switched ON
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 10186734?
Headlamp switch - Inoperative/Not illuminated - DTC U110B00 within 09-Central Electrics (BCM1). Customer statement: Headlamp switch - Inoperative/Not illuminated Workshop findings - DTC U110B00 within 09-Central Electrics (BCM1) as shown in Figure 1 Figure 1 - Yellow warning light/message within the DIP (Adaptive Lighting Fault) NOTE: Some lighting functionalities can in some cases be lost for example: - Rear fog.
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.
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