Vauxhall ASTRA Owner's Manual page 240

Tyre pressure
Increase the tyre pressure on the towing
vehicle to the value specified for a full load,
see page 337. Check the pressure of the
spare wheel and caravan/trailer wheels.
Trailer Stability Assist 3 (TSA)
TSA monitors vehicle movements when
towing a caravan or trailer. If the system
detects lurching movements, engine power
is reduced and the vehicle/trailer
combination is selectively braked until the
lurching ceases.
TSA is a function of the electronic stability
® Plus
programme (ESP ), see page 210.
Driving and operation
Driving characteristics, towing tips
In the case of trailers/caravans with brakes,
attach breakaway stopping cable to eye.
Before attaching the trailer/caravan,
lubricate the ball of the trailer/caravan
towing device. However, do not lubricate
the ball if a stabiliser, which acts on the
coupling ball, is being used to damp
hunting.
Check caravan/trailer lighting before
starting to drive. The fog tail lights on the
vehicle are deactivated when towing a
caravan or trailer.
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