10MY 'Smart Key Battery LOW' Message Displayed In Instrument Pack Message Center (SSM56277)

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

Publication date: 2012-04-05
Reference number: SSM56277

10MY 'SMART KEY BATTERY LOW' MESSAGE DISPLAYED IN INSTRUMENT PACK MESSAGE CENTER

TECHNICAL SERVICE BULLETIN

Reference Number(s): SSM56277, Date of Issue: April 05, 2012

LAND ROVER:	Range Rover Evoque; New Range Rover; LR4; Range Rover Sport
SECTION:	Electrical
AFFECTED VEHICLES:	Range Rover Evoque; New Range Rover; LR4; Range Rover Sport

SYMPTOM

204000 Instrumentation

Vehicles affected, 10my Range Rover, Range Rover Sport, Discovery4/LR4

Issue

When the "Smart key battery low" message is displayed in the instrument pack message center dealers are complaining that after a replacement battery has been fitted the message does not disappear. The dealer then replaces the key in the belief that the key is faulty.

Cause

Dealers are swapping batteries from known good smart keys to diagnose battery low message or fitting aged batteries off the shelf. The message is displayed when the smart key voltage threshold has dropped below 2.44 volts. The message will clear if the smart key battery threshold is higher than 2.95 volts.

NOTE: If these voltages are only measurable when the battery is inserted in the smart key.

CONTENT

Action

When the "Smart key battery low" message is displayed in the instrument pack message center dealer technicians and customers must fit a NEW still in the packet battery. Under no circumstances should you swap batteries from a known "good" smart key.

LR part number is YWK10003L. (battery type CR2032) Please note: CR2032 batteries stored in high humidity +75% & at high ambient temperatures greater then (+25degC) will greatly reduce its shelf life.

After replacement of the battery two smart key authentications need to take place to clear the message and to recognize the new battery voltage.

This is achieved by pressing any button on the smart key twice.

If the "Smart key battery low" message does not clear in the message center fit another new battery and retry.

If the "Smart key battery low" message is still present please replace the smart key, submit an EPQR and retain the smart key and all associated batteries for investigation. Please label the original battery and replaced battery separately.