BMW 7 Series: Battery
- (Safety) Information On AGM Battery
- Battery Replacement Information
- Disconnecting And Connecting Negative Battery Cable
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(Safety) Information On AGM Battery
Fig. 188: Identifying AGM Battery
Introduction
In September 2002, the first so-called VRLA batteries, better known as AGM
batteries came into use. (VRLA
means V alve R egulated L ead A cid, i.e. lea
Battery Replacement Information
A vehicle battery is constructed for the installation location and the
individual power requirements of the
particular vehicle. These individual power requirements depend on the
motorization and dif
Disconnecting And Connecting Negative Battery Cable
WARNING: Observe SAFETY INSTRUCTIONS for handling vehicle battery.
Follow instructions FOR DISCONNECTING AND CONNECTING BATTERY !
Observe notes on POWER SUPPLY /on intelligent battery sensor (IBS).
N
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Removing And Installing/Renewing Both Solenoid Valves On Right
Side (N63)
IMPORTANT: Always check that the solenoid valves are clean during removal
and
installation.
Possible malfunctions if valves are contaminated:
Irregular operation
OBD incorrect entry
Poor exhaust gas values
Low engine performance
IMPORTANT: Risk of damage!
Do not clean solenoid valves with co
Checking Cylinder Head For Watertightness (N63)
Necessary preliminary work
Remove LEFT CYLINDER HEAD.
Remove RIGHT CYLINDER HEAD.
Remove ALL VALVES.
NOTE: Set of special tools 11 8 080 can be used for cylinder bank 1 to 4
and cylinder
bank 5 to 8.
Position special tool 11 8 081 on cylinder head.
Fig. 44: Positioning Special Tool 11 8 081 O
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