Service bulletin 2071540/1

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10244978
Published by NHTSA	2023-11-07
Manufacturer's number	2071540/1
Manufacturer's date	2023-10-04
NHTSA component	ELECTRICAL SYSTEM; POWER TRAIN

NHTSA's summary

Bentayga/New Flying Spur - Hybrid - DTC P0B2500 and/or P0B2600 in 008C - High voltage battery management control unit. Customer statement / workshop findings: - Yellow engine warning light illuminated within the DIP - Red high voltage battery warning light illuminated within the DIP Workshop findings - DTC P0B2500 and/or P0B2600 stored within 008C - High voltage battery management control unit.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Transmission and driveline

Trouble codes named

P0B25, P0B26

Vehicles listed
BENTLEY BENTAYGA HYBRID	2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
BENTLEY FLYING SPUR HYBRID	2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
25V811000	2025-11-24. ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT:POWER CONTROL UNIT/MODULE (HPCU):SOFTWARE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
2083016/1	2026-10-08. Service bulletin. SOS Fault & Flight Mode Active \| Bentayga Customer: Warning on the instrument cluster relating to Emergency Call / SOS System.
2083110/1	2026-10-07. Service bulletin. Engine Management Light - N91 Coolant Valve \| Flying Spur Hybrid Technical background: Some 22MY Flying Spur Hybrid vehicles may exhibit an illuminated Malfunction Indicator Lamp (MIL) due to DTC P26B100 - Engine Coolant Bypass Valve "A" Stuck Closed being stored in the Thermal Management Control Module (00C5). When this DTC is present, the Thermal Management system displays MIL light on the DIP, resulting in DTC P162400 being stored in the Engine Control Module. A software update is available to address this condition.
2061369/14	2026-09-09. Service bulletin. Engine Overheating - Warning in the DIP \| V8 Kovomo. Customer statement / workshop findings: One or a combination of the following symptoms are evident • Engine overheat warning in the DIP (Engine overheating) • Unusual cooling fan operation at high temperatures • P19F700: Low engine coolant temperature indicator lamp coolant too warm • Signs of coolant in the vacuum hoses for switch valve N649
2061369/13	2026-09-05. Service bulletin. Engine Overheating - Warning in the DIP \| V8 Kovomo. Customer statement / workshop findings: One or a combination of the following symptoms are evident: • Engine overheat warning in the DIP (Engine overheating) • Unusual cooling fan operation at high temperatures • P19F700: Low engine coolant temperature indicator lamp coolant too warm • Signs of coolant in the vacuum hoses for switch valve N649
2078373/4	2026-09-03. Service bulletin. Sunroof blind not retracting \| Bentayga Series. Customer may report that the sunroof blind is stuck in the closed position and cannot be opened using interior controls. The Sunroof blind is stuck due to uneven/ruffled or crumped during open or closing
2078962/7	2026-09-01. Service bulletin. ODIS Error Message – Best Practice When Performing Baseline (BiL) Updates. Workshop Findings: During vehicle baseline (BiL) updates using ODIS, users may encounter various error messages. These errors can interrupt the update process and may be caused by issues related to the vehicle’s current configuration, communication faults, or problems with the SVM code being applied.
2081085/2	2026-08-06. Service bulletin. V8 Engine - Ticking Noise, Misfiring and Possible Low Oil Pressure Indications. Customer statement: The customer may report an audible ticking noise from the top of the engine, low oil pressure warnings / MIL on the Driver Information Panel, and/or misfiring during engine operation
2073377/4	2026-08-06. Service bulletin. TPMS - Warning within the Drivers Information Panel (DIP) - Tyre pressure sensor - Low battery.
2078373/3	2026-08-06. Service bulletin. Sunroof blind not retracting \| Bentayga Series.
2078773/2	2026-08-06. Service bulletin. Importance of Setting Delivery Date to Activate Full Customer Licenses \| 24MY - Onwards. Customer statement / workshop findings: Customers may report a loss of connected services functionality approximately 12 months after vehicle handover.