No Vehicle Audio Output Until Navigation Button Is Pressed (SSM72323)

WARNING: This page is about the LR4 Base, which is a different variant/trim than selected.

Publication date: 2015-07-23
Reference number: SSM72323

NO VEHICLE AUDIO OUTPUT UNTIL NAVIGATION BUTTON IS PRESSED

TECHNICAL SERVICE BULLETIN

Reference Number(s): SSM72323, Date of Issue: 23-Jul-2015

LAND ROVER:	LR3 / L319, LR4 / L319, Range Rover / L322, Range Rover Sport / L320
CATEGORY:	Electrical

SERVICE INFORMATION

Symptom 207000 Entertainment Systems

Content

ISSUE

A customer may report a concern that when the vehicle is started there is no cabin Audio at all from any sources. If the NAV button is pressed a 2-5 second period of AM/FM radio can be heard and then returns back to no audio. Issue will only self-recover after an ignition cycle.

CAUSE

Currently under analysis.

ACTION

If a customer reports that there is "No audio until the Navigation button is pressed", first check to see if there are any general problems with the HD Radio Module (HDRM) including intermittent faults. Also check the Water shedder and see if there are any signs of water damage to the HDRM. If any of these HDRM checks indicate an issue replace the HDRM ONLY. However if all electrical checks are ok then replace the Audio Control Module and ensure that the S/W installed is at the latest level.

NOTE: This is ONLY for "No Audio Until NAV Button Pressed". For any other general no audio issues, continue with diagnostics using Symptom Driven Diagnostics(SDD) and with reference to TOPIx.