# Service bulletin RR65503553

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.

- Type: Service bulletin
- NHTSA id: 10184604
- Published by NHTSA: 2020\-12\-21
- Manufacturer's number: RR65503553
- Manufacturer's date: 2020\-11\-01
- NHTSA component: ENGINE; EQUIPMENT; FUEL SYSTEM, GASOLINE

## NHTSA's summary

Information and instructions on carrying out a Cylinder Leakage Test on an N74 engine

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184604-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184604-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Equipment and accessories, Fuel system

## Vehicles listed

- 2020 to 2021 ROLLS\-ROYCE CULLINAN
- 2020 to 2021 ROLLS\-ROYCE DAWN
- 2020 to 2021 ROLLS\-ROYCE GHOST
- 2020 to 2021 ROLLS\-ROYCE PHANTOM
- 2020 to 2021 ROLLS\-ROYCE WRAITH

## Other bulletins for the same vehicles and component

- [RRA12202207](/bulletins/10230743.md), 2023-01-30, Service bulletin: ENGINE AND ENGINE COOLING. A Rolls\-Royce Phantom \(RR11/12\), Ghost \(RR21/22\) and Cullinan \(RR31\) vehicles have been identified as having a potential issue concerning the 2 x coolant pipe connections at the cylinder head. The coolant pipe retaining clips \(jubilee clips\) may not have been fitted in the correct position, which could result in a coolant leak.
- [A08202201UC](/bulletins/10224221.md), 2022-10-17, Service bulletin: EQUIPMENT:ELECTRICAL. 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.
- [RRA12202103](/bulletins/10206766.md), 2022-01-24, Service bulletin: SERVICE BRAKES; EQUIPMENT ADAPTIVE/MOBILITY:VEHICLE CONTROLS:BRAKING; EQUIPMENT. The affected vehicles have been identified as having a potential issue concerning the rear brake carrier fixings. It could be possible that during the rear axle assembly, the rear brake carriers were fitted with incorrect fixing \(T orx El4 instead of the correct El6\).
- [RR65562989](/bulletins/10203321.md), 2021-11-08, Service bulletin: ENGINE AND ENGINE COOLING. Complaints of deposits, crystalisation or emulsification in the coolant expansion tanks.
- [RR64605110](/bulletins/10203320.md), 2021-11-08, Service bulletin: EQUIPMENT. The vehicle has been brought to the workshop with a complaint relating to the SoE function.
- [RR65547515](/bulletins/10201173.md), 2021-09-07, Service bulletin: ENGINE AND ENGINE COOLING. Engine MIL light is illuminated and fault 12BF08 Lambda probe, from meager to fat slow reaction.
- [RR65558203](/bulletins/10201153.md), 2021-09-07, Service bulletin: EQUIPMENT:ELECTRICAL. Customer complains the CID monitor does not extend or retract correctly, for example stuck in the lowered position or doesn?t raise fully.
- [RR65547515](/bulletins/10200504.md), 2021-08-23, Service bulletin: ENGINE; ELECTRICAL SYSTEM:SOFTWARE. Engine MIL light is illuminated and fault 12BF08 Lambda probe, from meager to fat slow reaction
- [RR65537744](/bulletins/10200503.md), 2021-08-23, Service bulletin: STRUCTURE; EQUIPMENT. The glovebox has difficulty opening and closing, or in some instances will not open or close
- [RR65537732](/bulletins/10200502.md), 2021-08-23, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. 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.

JSON: [/v1/bulletins/10184604](/v1/bulletins/10184604)

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