Porsche cayman gt4 Owner's Manual page 166

Radiator fan, engine compartment
blowers
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Radiator fans, engine
WARNING
compartment blowers
The engine-compartment blowers are mounted in
the engine compartment.
After the engine is switched off, the engine
compartment temperature is monitored for
approx. 30 minutes.
During this period, and depending on
temperature, the engine-compartment blowers
may continue to run or start to run.
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Carry out work in this area only with the engine
off and exercise extreme caution.
The radiators and radiator fans are in the front of
the vehicle.
The radiator fans in the front of the vehicle may be
operating or unexpectedly start operating when
the engine is switched on.
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Carry out work in these areas only with the
engine switched off.
f
Take great care to ensure that parts of the
body, items of clothing or jewellery cannot be
drawn in by the radiator fan, engine-
compartment blower, drive belt or other
moving parts.
164
Maintenance and Car Care
Measurements on test stands
Performance test
Performance tests on roller-type test stands are
not approved by Porsche.
Brake tests
Brake tests must be performed only on roller-type
test stands.
The following limit values must not be exceeded
on roller-type test stands:
– Test speed 4.7 mph (7.5 km/h)
– Test duration 20 seconds
In order to fulfil legal stipulations, measurements
with different limit values are permissible (e. g.
exhaust emissions tests etc.).
Testing the electric parking brake
Electric parking brake tests on the brake test
stand must only be performed with the ignition
switched on and with the manual gearshift lever in
neutral
The vehicle switches automatically to brake test
stand mode, in which the electric parking brake
can be tested.
The message "Electric parking brake in
service mode" appears on the multi-function
display in the instrument panel.
Balancing wheels on the vehicle
During finish balancing of the wheels, the entire
vehicle must be lifted and the wheels must be free
to turn.