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Service bulletin 2063729/5

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)
TypeService bulletin
NHTSA id11033344
Published by NHTSA2026-06-03
Manufacturer's number2063729/5
Manufacturer's date2026-05-08
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Fitment of control modules from donor vehicles for test purposes. Technical background If an issue is suspected for one of the control modules listed below: • Onboard supply control unit (J519) • Convenience system central control unit (J393) • Data bus diagnostics interface (J533) • Control unit 1 for Information Electronics (J794) • Control unit in dash panel insert (J285) • Emergency call module control unit (J949) The fitment of donor parts from another vehicle is not advisable and only possible if approved from Product Support via an open DISS query.

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

Vehicles listed
BENTLEY BENTAYGA2017, 2018, 2019, 2020, 2021, 2022, 2023
BENTLEY BENTAYGA2025, 2026
BENTLEY CONTINENTAL GT2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
BENTLEY CONTINENTAL GT CABRIO2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
BENTLEY FLYING SPUR2020, 2021, 2022, 2023, 2024, 2025, 2026
BENTLEY redundant BENTAYGA2024

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

Recalls for the same vehicles and component
25V8110002025-11-24. ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT:POWER CONTROL UNIT/MODULE (HPCU):SOFTWARE
23V0340002023-01-27. ELECTRICAL SYSTEM

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
2080951/22026-10-08. Service bulletin. Temperature Pop‑Up No Longer Displayed in the MMI Display | Continental GT/GTC /Flying Spur. Customer Statement: Customers may report that the temperature popup no longer appears in the MMI display when adjusting the cabin temperature via the Wellbeing App or rotary dial.
2076695/62026-10-07. Service bulletin. Showroom Charging Instructions | Continental GT/GTC and Flying Spur. Condition: 12v battery voltage drops when on showroom display
2083321/22026-10-07. Service campaign. Software Update | 12v Li-On Battery | Continental GT/GTC/Flying Spur | SC26/27 Technical background: Affected vehicles have received updated hardware to the 12V Li-On battery. A software update is now required and available for these affected vehicles.
2083110/12026-10-07. 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.
2078983/52026-10-07. Service bulletin. 12v Battery Compatibility | Continental GT/GTC/Flying Spur Customer statement / workshop findings: This TPI is intended to give definitive guidance on the installation of the latest 12v battery in 25MY vehicles. The need for clarity arises due to software dependencies that affect battery approval and functionality.
2082051/42026-10-07. Service bulletin. 12V Battery Compatibility | Continental GT/GTC/Flying Spur | 26MY. Customer statement / workshop findings: This TPI is intended to give definitive guidance on the installation of the latest 12V battery in 26MY(BIL108) and 26.5MY(BIL110) vehicles. The need for clarity arises due to software dependencies that affect battery approval and functionality.
2082981/12026-10-07. Service campaign. Software Update | Trailer Assist | Bentayga | 25MY & 26MY (SC26/19). Technical background: A software update is now available to address a potential concern for vehicles fitted with an authorised towbar. The software update intends to update relevant control modules to fix this potential concern. In affected vehicles, customers may be presented with the message "Trailer reverse assist: currently unavailable" on the MMI, preventing access to Trailer Assist functionality.
2080872/32026-09-09. Service bulletin. HVAC Auto Fan - Auto Function Not Operating Correctly l Cont GT/C, Flying Spur. Customer Statement: Customers may report that the HVAC Auto function is not operating as intended. When Auto mode is selected, the air conditioning system remains at the lowest fan speed only. Instead of adjusting automatically, the fan does not increase speed as expected
2083066/12026-09-09. Service bulletin. Drive system fault - Camshaft position sensor DTC. Customer may state following concerns: Drive system fault on the dashboard Abnormal engine noise on engine start-up
2082051/32026-09-09. Service bulletin. 12V Battery Compatibility | Continental GT/GTC/Flying Spur | 26MY. Customer statement / workshop findings: This TPI is intended to give definitive guidance on the installation of the latest 12V battery in 26MY vehicles. The need for clarity arises due to software dependencies that affect battery approval and functionality.