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Technical Modifications<br />
f Modifications may be carried out on your<br />
vehicle only if approved by Porsche.<br />
This ensures that your Porsche will remain<br />
reliable and safe to drive, and that it will not be<br />
damaged as a result of the modifications.<br />
Your authorized Porsche dealer will be pleased<br />
to advise you.<br />
Safety notes!<br />
f Only use genuine Porsche spare parts for your<br />
vehicle or spare parts of similar quality which<br />
have been manufactured according to the<br />
specifications and production requirements of<br />
Porsche. These parts are available from your<br />
authorized Porsche dealer or a qualified<br />
specialist workshop. Safety-related<br />
accessories should only be used if they are<br />
from the Porsche Tequipment range or are<br />
tested and approved by Porsche. Your<br />
authorized Porsche dealer will be pleased to<br />
advise you and answer any questions you may<br />
have.<br />
However, the use of other parts or<br />
accessories may adversely affect the safety<br />
of your vehicle, and Porsche can take no<br />
responsibility for any loss or damage caused<br />
by their use.<br />
Even if the supplier of other accessories or<br />
parts is a recognized supplier, the safety of<br />
your vehicle may still be affected if such items<br />
are installed.<br />
Due to the large variety of products offered in<br />
the accessory market, it is not possible for<br />
Porsche to inspect and approve every one.<br />
f In addition, please note that the use of<br />
replacement parts that are not genuine<br />
Porsche parts or approved parts, or the use of<br />
accessories not approved by Porsche may<br />
also detrimentally affect your vehicle warranty.<br />
f Check your vehicle regularly for signs of<br />
damage. Damaged or missing aerodynamic<br />
components, such as spoilers or underbody<br />
panels, impair vehicle handling and must<br />
therefore be replaced immediately.<br />
Radiator fan<br />
For information on radiator fans:<br />
f Please see the chapter “RADIATOR FANS” on<br />
page 258.<br />
Warning!<br />
Danger of injury. After the ignition is<br />
switched off, the engine compartment and<br />
coolant temperatures are monitored for<br />
approx. 30 minutes. During this period, and<br />
depending on temperature, the radiator fan<br />
may continue to run or start to run.<br />
f Carry out work in these areas only with the<br />
engine off and exercise extreme caution.<br />
Measurements on test stands<br />
Performance test<br />
Performance tests on roller-type test stands are<br />
not approved by Porsche.<br />
Brake tests<br />
Brake tests must be performed only on roller-type<br />
test stands.<br />
The following limit values must not be exceeded<br />
on roller-type test stands:<br />
– Test speed 4.7 mph (7.5 km/h)<br />
– Test duration 20 seconds<br />
Testing the electric parking brake<br />
Electric parking brake tests on the brake test<br />
stand must only be performed with the ignition<br />
switched on and with the manual gearshift lever in<br />
neutral or the Porsche Doppelkupplung selector<br />
lever in position N.<br />
The vehicle switches automatically to brake test<br />
stand mode, in which the electric parking brake<br />
can be tested.<br />
The message “Electric parking brake in service<br />
mode” appears on the multi-function display in the<br />
instrument panel.<br />
Balancing wheels on the vehicle<br />
During finish balancing of the wheels, the entire<br />
vehicle must be lifted and the wheels must be free<br />
to turn.<br />
Maintenance and Car Care 253
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