Service bulletin SSM73933
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 | 10148474 |
| Published by NHTSA | 2018-11-13 |
| Manufacturer's number | SSM73933 |
| Manufacturer's date | 2018-07-12 |
| NHTSA component | EQUIPMENT; ELECTRICAL SYSTEM |
NHTSA's summary
Issue: A customer may report an audible sound (groan type noise) from under bonnet immediately after the vehicle is unlocked and the vehicle stationary. The sound will extinguish after several seconds and is generated by the Acoustic Vehicle Alert System (AVAS) sounder fitted to Plug-in Hybrid Electric Vehicles (PHEV). The AVAS is located behind the grille at the front of the vehicle. Cause: Software error in the Audio Amplifier Module (AAM) related to a communication timing error during wake up when vehicle is unlocked.
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, Equipment and accessories
| LAND ROVER RANGE ROVER | 2018 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| SSM76411 - 10MAR26 | 2026-04-06. Other. Smart Key Deactivated message on instrument cluster and unable to start their vehicle |
|---|---|
| TUCC_APR2025_18 | 2025-05-05. Other. Leaking windshield that caused the water ingress on the electrical component. |
| SFCC_OCT2024_50 | 2024-11-07. Other. The instrument panel may display an amber High Voltage (HV) system warning message & a Malfunction Indication Lamp (MIL) at the end of a charging cycle before the charging cable is removed. |
| SFCC_AUG2024_24 | 2024-09-06. Other. concern has been identified on certain JLR vehicles, where the Body Control Module (BCM) does not fully meet US importation requirements. The requires BCM replacement with a new component which fully meets the US importation requirements. |
| BIG5MAR24_34b | 2024-04-05. Service bulletin. A concern has been identified where on certain vehicles equipped with TDV6 3.0L Diesel and Ingenium I4 2.0L Diesel engines, when connected to a diagnostic scan tool during the California SMOG test, the Powertrain Control Module (PCM) incorrectly reports the monitor readiness status as 'not supported'. A software update to the PCM is needed. |
| N808 ER v1 | 2024-03-08. Service bulletin. Certain 2017 to 2019 Land Rover vehicles equipped with TDV6 3.0L Diesel engines and Ingenium I4 2.0L Diesel engines, when connected to a diagnostic scan tool during the California SMOG test, the Powertrain Control Module (PCM) incorrectly reports the monitor readiness status as not supported. |
| SFCC_DEC2023_32 | 2024-01-09. Service bulletin. Due to time required to complete in shop vehicle set up and workflow for Audio loss, it has been found that workflow may provide false result if IMC is not in a faulted state when workflow is run to identify potential Polar Switch Firmware fault. |
| SFCC_NOV2023_30 | 2023-12-07. Service bulletin. Startup battery keeps draining / Vehicle will not start |
| WACCSEP23_6 | 2023-10-06. Service bulletin. Battery low warning displayed on instrument cluster and/or no-start |
| SSM75869 | 2023-09-08. Service bulletin. Coolant Low Warning Message Displayed On The Instrument Panel Cluster |