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Service bulletin SSM74547

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 id10165948
Published by NHTSA2019-10-15
Manufacturer's numberSSM74547
Manufacturer's date2019-09-17
NHTSA componentFORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

NHTSA's summary

Adaptive speed control not available, intelligent emergency braking not available, forward alert not available over 80km/h (50mph) is displayed on the Instrument Cluster (IC). Diagnostic Trouble Code (DTC) C1A67-78 and/or C1A67-54 are set in the Adaptive Speed Control Module (ASCM).

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

Driver assistance, Electrical system, Adaptive cruise control

Trouble codes named

C1A67

Vehicles listed
LAND ROVER DISCOVERY2019, 2020
LAND ROVER RANGE ROVER2018, 2019, 2020
LAND ROVER RANGE ROVER SPORT2018, 2019, 2020

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
SSM74547Attachme2019-10-15. Service bulletin. Adaptive speed control not available, intelligent emergency braking not available, forward alert not available over 80km/h (50mph) is displayed on the Instrument Cluster (IC). Diagnostic Trouble Code (DTC) C1A67-78 and/or C1A67-54 are set in the Adaptive Speed Control Module (ASCM).
LTB01270NAS12019-04-08. Service bulletin. A 'Driver Intervene' message may be intermittently displayed on the Instrument Cluster and the adaptive cruise control driver intervention system operates when not required, with unexpected braking at low speed. Upon further investigation, no related DTC (Diagnostic Trouble Code) will be stored.