Vauxhall Astra GTC Owner's Manual page 161

160 Vehicle care
The brake fluid level must be between
the MIN and MAX marks.
When topping up, ensure maximum
cleanliness as contamination of the
brake fluid can lead to brake system
malfunctions. Have the cause of the
loss of brake fluid remedied by
a workshop.
Only use high-performance brake
fluid approved for the vehicle. Brake
and clutch fluid 3 198.
Battery
The vehicle battery is maintenance-
free provided that the driving profile
allows sufficient charging of the
battery. Short-distance-driving and
frequent engine starts can discharge
the battery. Avoid the use of
unnecessary electrical consumers.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Laying up the vehicle for more than
4 weeks can lead to battery
discharge. Disconnect the clamp from
the negative terminal of the vehicle
battery.
Ensure the ignition is switched off
before connecting or disconnecting
the vehicle battery.
The anti-theft alarm siren must be
deactivated as follows: Switch the
ignition on then off, disconnect the
vehicle's battery within 15 seconds.
Battery discharge protection 3 110.
Replacing the battery
Note
Any deviation from the instructions
given in this paragraph may lead to
a temporary deactivation of the stop-
start system.
When the battery is being replaced,
please ensure that there are no open
ventilation holes in the vicinity of the
positive terminal. If a ventilation hole
is open in this area, it must be closed
off with a dummy cap, and the
ventilation in the vicinity of the
negative terminal must be opened.
Only use batteries that allow the fuse
box to be mounted above the battery.
In vehicles with stop-start system,
ensure to have the AGM (Absorptive
Glass Mat) battery replaced with an
AGM battery again.