WenmarOpen by Wenmar Pro

Service bulletin RR65494848

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 id10181243
Published by NHTSA2020-10-19
Manufacturer's numberRR65494848
Manufacturer's date2020-09-01
NHTSA componentEQUIPMENT

NHTSA's summary

During a programming session with ISTA 4.25.x, the AMP fails coding.

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

Equipment and accessories

Vehicles listed
ROLLS-ROYCE CULLINAN2019
ROLLS-ROYCE CULLINAN2021

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

Other bulletins for the same vehicles and component
A08202201UC2022-10-17. Service bulletin. The vehicles identified may potentially not transfer incoming voice audio during a telematics call due to the 3G network deactivation in the United States. Therefore, this will affect all Connected Services voice audio in an Emergency call (E-call), Concierge call and Roadside assist calls.
RR646051102021-11-08. Service bulletin. The vehicle has been brought to the workshop with a complaint relating to the SoE function.
RR655377442021-08-23. Service bulletin. The glovebox has difficulty opening and closing, or in some instances will not open or close
RR655377322021-08-23. Service bulletin. The engine oil level has not been determined for a long time. Please measure engine oil level. The check control message (ID 961) can occur on a new vehicle even with very low usage or relatively low operating hours.
RR655371632021-05-24. Service bulletin. Jerking/Jolting when cornering or accelerating from low speeds and at low to medium loads. Complaint is also perceived as tension fluctuations.
RR653342682021-05-24. Service bulletin. Visible cracks or hazy areas present in the surface of the LED headlight lens
RR652178452021-05-24. Service bulletin. The customer complains there is little or no cooling effect from the air conditioning system. When checking the A/C system it is either very low or empty of refrigerant.
RR655035532020-12-21. Service bulletin. Information and instructions on carrying out a Cylinder Leakage Test on an N74 engine
RR655019102020-11-16. Service bulletin. Change of Torque - Sunroof fixings: Fixing torque of bolts securing sunroof frame to the body have been increased.
RR646051102020-11-16. Service bulletin. SoE - Diagnosis guides and quality reporting: The vehicle has been brought to the workshop with a complaint relating to the SoE function.