Land Rover Defender: Battery monitoring system

Only start the engine if it is safe to do
so. Failure to do so may lead to a
collision, potentially resulting in serious
injury or death.
The Intelligent Power System
Management (IPSM) continuously monitors
the condition of the main vehicle battery.
If excessive battery discharge occurs, the
system begins to shut down non-essential
electrical systems in order to protect the
battery.
If the IPSM calculates that the battery's
condition is not within the set parameters,
there are two levels of action which can
be taken. Both levels have an
accompanying message on the
touchscreen, and in the case of the low
battery warning, in the instrument panel.
- Energy Management: Is displayed in
the instrument panel if the engine is
not running and system features are
causing excessive battery discharge.
After 3 minutes, the IPSM begins
shutting down the vehicle's systems.
Normal system operation resumes
when the engine is started.
- Low battery - Please start engine: Is
displayed on the touchscreen and in
the instrument panel, if the engine is
not running. After 3 minutes, the IPSM
begins shutting down the vehicle's
systems. Normal system operation
resumes when the engine is started.
Note: If the instrument panel displays Low
Battery - Please Start Engine, drive the
vehicle to allow the battery to recover to
an acceptable level. Drive the vehicle for
at least 30 minutes in temperatures above
32ºF (0ºC), or at least 60 minutes if the
temperatures are below 32ºF (0ºC). If
normal system operation does not resume
when the engine is switched back off, the
battery may not have been sufficiently
charged. If safe to do so, restart the
engine. If problems still exist, contact a
retailer/authorized repairer.
READ NEXT:
FUSE BOX LOCATIONS
Take care to protect the box from
moisture. Refit the fuse box lid at the
earliest opportunity.
Access the fuses as follows:
1. Engine compartment fuse box:
Remove the under-hood
Make sure the relevant safety warnings
have been read and understood before
replacing a tire.
All replacement tires must be the same
specification as the original equipment
tires, except for approve
SEE MORE:
CAUTION:
If the front air bags are deployed, the following components must be replaced:
Driver air bag module
Passenger air bag module
Fly leads (where applicable) connecting front air bag modules to SRS
harness
Front safety belt buckle pre-tensioner
Rear safety belt pre-tensioners - if inst
REMOVAL AND INSTALLATION
GENERAL EQUIPMENT
PART(S)
REMOVAL
WARNINGS:
To avoid accidental deployment, the Restraints Control Module (RCM)
backup power supply must be
depleted. Wait at least 1 minute after disconnecting the startup battery
ground cable(s) before doing any
repair or adjustmen
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