
Maintenance and Car Care
259
Porsche dealer to do this work as they have
trained workshop personnel and the necessary
parts and tools. Warning!
Brake fluid is hazardous to your health, and
may be fatal if swallowed.
Brake fluid also attacks paintwork.
f Keep brake fluid out of children's reach.
f Immediately rinse off spilled brake fluid with
clean water.
f If brake fluid gets into your eye, immediately
rinse with clean water for a few minutes. Then
see a doctor immediately.
f Please note all the info rmation on the refill container of the brake fluid.
Changing brake fluidBrake fluid absorbs moisture from the air
over time. The absorbed water can impair
braking efficiency.
fIt is important therefore to have the brake fluid
changed in accordance with the change
intervals specified in the “Maintenance”
booklet.
The warning light on the instrument panel and the
warning message on the multi-function display
alert you to the fact that the brake fluid level is
too low and could indicate brake circuit failure
if the pedal travel is greater than normal.
Note on operation
If the warning light and warning message appear
when driving:
f Stop immediately in a suitable place.
f Do not continue driving.
Please contact a qualified specialist workshop.
We recommend that you have an authorized
Porsche dealer to do this work as they have
trained workshop personnel and the necessary
parts and tools.
Washer Fluid We recommend window cleaner concentrates
approved by Porsche for either summer or winter,
depending on the season. Your authorized
Porsche dealer will be pleased to advise you.
The washer fluid reservoir for windshield, rear
window and headlights is located at the rear left in
the engine compartment (blue screw cap).
Brake warning light USA
Brake warning light Canada

274
Maintenance and Car Care
Cleaning headlights, lights, interior and
exterior plastic components, adhesive
foils, radar sensor for adaptive cruise
control and rearview cameraObserve the following points:
fUse only clean water and a little dishwashing
liquid or interior window cleaner to clean
headlights, lights, plastic components
and surfaces.
Use a soft sponge or a soft, lint-free cloth.
Note
An interior window cleane r can also be used to
clean plastic surfaces (always read the cleaning
instructions on the container!).
We recommend Porsche interior window cleaner.
f Gently wipe the surface without applying
too much pressure.
f Do not clean when dry.
f Never use other chemical cleaners
or solvents.
f Rinse cleaned surfaces with clear water.
Alloy wheelsMetal particles (e.g. brass or copper in brake
dust) must not remain too long on alloy wheels.
Contact corrosion can cause pitting.
Note
Cleaners with an oxide-removing effect or
wrong pH value, as are commonly used for
other metals, as well as mechanical tools and
products, will damage the oxide layer and are
therefore unsuitable.
fUse only cleaners for alloy wheels
(pH value 9.5). Products with the wrong
pH value can destroy the protective layer
on the wheels.
We recommend Porsche cleaner for light
alloy rims.
f If possible, wash the wheels every two weeks
with a sponge or washing brush. If the wheels
are exposed to road salt, grit or industrial dust,
weekly cleaning is necessary.
f Every three months, after cleaning, treat the
wheels with car wax or an acid-free grease
(e.g. Vaseline).
Rub the grease in well with a soft cloth.
f Please see the chapter “CLEANING IN CAR
WASHES” on page 271.
Danger!
Danger of accident resulting in serious
personal injury or death if cleaning agents
(e.g. wheel cleaning agents) come into
contact with the brake discs. The resulting
film on the brake discs can impair braking
performance.
f Make sure that no clea ning agent comes into
contact with the brake discs.
f If cleaning agent has come into contact with
the brake discs, clean the brake discs
thoroughly with a strong jet of water.
f Paying attention to any road users behind you, dry the brake discs by applying the brakes.
Stainless steel tailpipesStainless steel tailpipes can discolor due to
soiling, strong heat and combustion residues.
The original shine can be achieved again using
commercially available metal lustre paste or metal
polish.

Minor Repairs
277
Minor Repairs
Exercise Extreme Caution when Working
on your Vehicle .......
................................... 278
Tires and Wheels..... ................................... 280
Wheel Bolts ................ .............................. 293
Flat Tire .................. ................................... 293
Electrical System .... ................................... 296
Battery ............................................ .......... 303
External Power Supply, Jump-Lead
Starting ........................................... .......... 306
Changing the Remote Co ntrol Battery .......... 307
Replacing Bulbs ...... ................................... 308
Headlights ....................................... .......... 308
Side Turn Signal Ligh t................................. 312
Licence Plate Lights ................................... 313
Side Marker Light .... ................................... 313
Changing Light-Emitting Diodes and
Long-Life Bulbs ......................................... 314
Headlight Adjustment .................................. 314
Towing ........................ .............................. 316
Fire Extinguisher .......................... .............. 321

Minor Repairs
299
Fuse box in left side of dashboardNo.Designation A
1 Steering column switch 7.5
2 Instrument cluster 7.5
3PCM 3.1 10
4 Additional instrument 5
5 Air conditioning, front + rear 10
6 Rearview camera 5
7 LHD, electric parking brake button 5
8 LHD, central locking for rear left
door
RHD, central locking for left doors 10
9 LHD, steering column adjustment 15
10 LHD, PDK control unit 25
11 Power windows, rear left 25
12 Power windows, front left 25
13 ParkAssist 5
14 Xenon headlight, left 15
15 Interior mirror,
LHD, diagnostic socket 5
16 LHD, PDK control unit,
clutch sensor
RHD, air conditioning, sun sensor 5
17 Not used
18 Not used
19 Not used
20 LHD, ignition lock control unit, light
switch 5
21LHD, central locking for front
left door
RHD, mobile phone charger 10
5
22 Steering column lock 5
23 Left-hand drive vehicles only:
Turn signal, rear right
Marker light, front left
Low beam headlight, right
High beam headlight, right
Side turn signals, front
Cornering light, front left
Ignition lock
Two-tone horns
PSM
Starter relay
Emergency flasher switch LED
Ignition lock lighting
Turn signal, front left/right
Footwell lights
Ignition lock anti-removal lock
Power steering control valves 30
No.
Designation A
24Left-hand drive vehicles only:
Turn signal, rear left
Marker light, front right
Low beam headlight, left
High beam headlight, left
Cornering light, front right
Engine compartment lid light
Shutter elements, right/left
Active brake ventilation
open/closed
Heatable washer jets
Engine compartment lid
Headlight beam adjustment 30
25 Left-hand drive vehicles only:
Steering column lock
Filler flap closed/open
Windshield washer pump,
front/rear 15
26 LHD, headlight cleaning system 30
27 Ignition coils 15
28 Not used
29 Oil level sensor, camshaft sensor 7.5
30 Oxygen sensors behind catalytic
converter 7.5
31 Electric control valves for engine 15
32 Engine control unit 20
33 Fan activation,
tank leakage detection 10
34 Valves for engine 10
35 Oxygen sensors ahead of catalytic
converter 10
No.
Designation A

300
Minor Repairs
Fuse box in right side of dashboard
36 Not used
37 Not used
38Front cigarette lighter,
luggage compartment socket 20
39 Seat adjustment, front left
without memory 30
40 RHD, center console sockets,
glove box 20
41 PSM control unit 10
42 Interior light in roof console 7.5
43 Not used
44 Not used
45 Not used
46 Not used
47 Slide/tilt roof 30
48 Windshield wipers 30
49 Engine control unit 5
50 Not used
51 Seat adjustment, front left
with memory 30
52 Seat adjustment, rear left 20
53 Circulating pump 10
54 Rain sensor 5
55 Not used
56 Not used
57 Air-conditioning system fan 40
No.
Designation A
No.Designation A
1 Tire Pressure Monitoring control unit 5
2 Not used
3 Seat heating, front 30
4 Seat heating, rear 30
5 Seat adjustment, rear right 20
6 Not used
7 Not used
8 Seat adjustment, front right
with memory 30
9 RHD, electric parking brake button 5
10 LHD, handset, mobile phone charger
RHD, steering column adjustment 5
15
11 RHD, PDK control unit 25
12 LHD, telephone 5
13 Not used
14 Xenon headlight, right 15
15 Not used
16 RHD, diagnostic socket 5
17 PSM control unit 5
18 LHD, air conditioning, sun sensor
RHD, PDK control unit,
clutch sensor 5
19 Garage door opener 5
20 Air bag control unit 7.5
21 Advanced air bag, occupant sensing 5
22 Steering column switch 5
23 Adaptive cruise control (ACC) 5
24 Seat ventilation, front seats 7.5
25 Seat ventilation, rear seats 7.5
26 Not used
27Front center console socket,
Rear cigarette lighter 20
28 Seat adjustment, front right
without memory 30
29 LHD, rear center console socket,
socket in glove box,
socket in large rear center console 20
30 Not used
31 Coolbox 15
32 Rear Seat Entertainment 7.5
33 Right-hand drive vehicles only:
Turn signal, rear right
Marker light, front left
Low beam headlight, right
High beam headlight, right
Side turn signals, front
Cornering light, front left
Ignition lock
Two-tone horns
PSM
Starter relay
Emergency flasher switch LED
Ignition lock lighting
Turn signal, front left/right
Footwell lights
Ignition lock anti-removal lock
Power steering control valves 30
No.
Designation A

Minor Repairs
301
Fuse and relay carriers
in the luggage compartment
34Right-hand drive vehicles only:
Turn signal, rear left
Marker light, front right
Low beam headlight, left
High beam headlight, left
Cornering light, front right
Engine compartment lid light
Shutter elements, right/left
Active brake ventilation
open/closed
Heatable washer jets
Engine compartment lid
Headlight beam adjustment 30
35 Right-hand drive vehicles only:
Steering column lock
Filler flap closed/open
Windshield washer pump,
front/rear 15
36 RHD, headlight cleaning system 30
37 Not used
38 Not used
39 PSM control unit 25
40 LHD, central locking for front/rear
right door 10
41 Power windows, front right 25
42 Power windows, rear right 25
43 Alarm horn 5
44 Vehicle Tracking System VTS 5
45 Not used
46 Not used
No.
Designation A
47 Fuel pump control unit 25
48 Horn (two-tone horns) 15
49 Diagnostic socket 5
50 RHD, ignition lock, light switch 5
51 RHD, central locking for front right
door 10
52 RHD, steering column lock 5
53 Not used
54 Not used
55 Not used
56 Not used
57 PSM pump control unit 40
No.
Designation A
No. Fuse carrier A A
1Not used
2 Spoiler flap (Turbo) 10
3 Audio amplifier (Burmester
®)
Audio amplifier (ASK Sound, Bose) 30
25
4 Start/Stop control unit 30
5 Start/Stop control unit 30
6 Differential lock 10
7 Differential lock 30
8 Subwoofer (Bose, Burmester®)30
9 Powerlift tailgate 25
10 PASM control unit 25
11 Luggage compartment lights 5
12 PDCC control unit 10

304
Minor Repairs
Battery carefEnsure that battery is securely mounted.
f Keep terminals and connections clean and
properly tightened. Corrosion can be
prevented by coating the terminals and
connections with petroleum jelly or silicone
spray.
f Ensure that vent caps ar e securely tightened to
prevent spillage.
Checking the electrolyte fluid level
(only on low-maintenance batteries)
Generally, the electrolyte level must be checked
more often in summer than in the winter, and more
often when driving long distances.
f When adding water, use only clean containers.
In no case may alcohol (e.g. window cleaner
residues) be permitted to enter the battery.
f Unscrew and open the filler vent caps of each
cell.
With the car on a level surface, the fluid level
should meet the indicator mark in each cell.
f If necessary, top up with distilled water. Do not
use acid. Only fill up to the mark, otherwise the
electrolyte will overflow when the battery is
being charged and cause damage.
Winter operationDuring the winter months, battery capacity tends
to decrease as temperatures drop. Additionally,
more power is consumed while starting, and the
headlights, heater, rear window defogger, etc.,
are used more frequently.
f Let your Porsche dealer test the battery's
capacity before winter sets in.Vehicle storageIf the car stands for long periods in the garage or
workshop, the doors and lids should be closed.
f Remove the ignition key and, if necessary,
disconnect the battery.
Notes on operation
f When the battery is disconnected, the alarm
system ceases to function.
If the vehicle was locked before the battery
was disconnected, the alarm will be triggered
when the battery is reconnected.
To deactivate the alarm system:
f Lock the vehicle and unlock it again.
Alarm system, central locking
f The status of the central locking and alarm
system is not changed by disconnecting the
battery. Maintenance notes
Even if you put your vehicle out of operation, the
battery still discharges.
The battery will discharge more quickly if your
vehicle is not driven on a daily basis over a
distance of several miles. The more often you
drive your vehicle, and
the longer the distance
driven on each trip, the more opportunity the
vehicle‘s charging system w ill have to recharge the
batteries.
f To preserve its efficiency, charge the battery
about every 6 weeks.
f Check the battery acid level and top off with
distilled water if necessary.
f Store a battery that has been removed in a
dark, cool place, but not subject to freezing.

308
Minor Repairs
Changing the battery (CR 2032, 3V)
1. Remove the emergency key.
2. Lever off the cover on the back of the key
housing using a small screwdriver.
3. Change the battery (check polarity).
4. Re-fit cover and press together firmly.
5. Insert the emergency key.
Replacing Bulbs
Warning!
Risk of serious personal injury or death. The
headlights are under high voltage when
installed.
f Exercise extreme care when working close to
the headlights.
Risk of short circuit.
f Always switch off the relevant load when
changing bulbs.
Risk of damage. Bulbs of a high wattage can
damage the housing.
f Only use the bulbs specified in the bulb chart.
f Bulbs must be clean and free from grease.
f Never touch bulbs with your bare hands.
Use a cloth or soft paper when
replacing bulbs.
f Always carry spare bulbs with you.
In certain countries, it is mandatory to
carry spare bulbs.
Headlights
Caution!
Risk of damage to headlights due to abrasion
and excessive temperatures.
f Do not affix any coverings (e.g. “stone guards”
or films) on or around the headlights.
f Use soapy water only to clean light lenses and
plastic headlight lenses. In no case may
chemical cleaners or other volatile cleaning
fluids be used.
f To prevent scratches, do not rub with a dry or merely moist cloth, tissue or insect sponges.
Note
The headlights can mist up due to temperature
and humidity.
f To ensure optimum ventilation, do not cover
the gap between headlight and body.