Vauxhall Zafira Owner's Manual page 173

When driving downhill, the brakes a re
under considerab ly m ore load when towing
a cara van / trailer. For this reason, drive in
the same gear as if driv ing uphill and drive
at a similar speed.
Autom atic transm ission 3 or Ea sy tronic 3
in Autom atic mode will automatically
select the driving prog ra mme with the
optimum engine brak ing effect.
As necessary, gear 3, 2 or 1 c an also be
manually selected.
The cooling fan is electrically operated. Its
cooling power is therefore independent of
the engine speed.
Since a considerable amount of heat is
generated at high engine sp eed s a nd less
at slower speeds, d o not shift down when
climbing hills whilst the vehicle is still coping
with the g ra dient in the higher gea r.
Starting on inclines
For vehicles with manual transmission,
the most favourable engine speed when
starting-off on an incline is between
2500 a nd 3000 rpm for petrol engines and
between 2000 and 2200 rpm for diesel
engines. Hold engine speed constant,
engage clutch gradually (let slip), release
ha ndb ra ke and open throttle. If possible,
the engine speed should not drop d uring
this procedure.
For vehicles with autom atic tra nsmission 3
or Easytronic 3 it suffices to apply full
throttle in Automatic mode.
Before starting-off under ex treme
conditions (high c om bination w eight,
mountainous terrain with steep inc lines),
switch off all unnecessary elec trica l loa ds
(e.g. heated rear wind ow , air conditioning
sy stem 3, heated front seats 3).
Driving an d Operation 169