Page 233 of 300

Maintenance and Car Care 231
Fuel Evaporation Control
Fuel tank venting
The evaporation chamber and the carbon canister prevent fuel vapors from escaping to the atmosphere at extreme high outside temperatures, when driving abruptly around curves and when the car is parked at an incline or in any other non level position.
Vapor control system and storage
When the fuel tank is filled, vapors are collected in the evaporation chamber by a vent line leading the vapors to the carbon canister where they are stored as long as the engine does not run.
Purge system
When the engine is running, the fuel vapors from the canister will be mixed with fresh air from the ambient air of the canister. This mixture will be directed to the intake air housing by the tank vent line, mixed with the intake air and burned during normal combustion.
Car Care Instructions
fPlease see the chapter “MEASUREMENTS ON TEST STANDS” on page 221.
Regular Maintenance and correct care helps to maintain the value of your car and is also a requirement for maintaining the manufacturers vehicle warranties.
Your authorized Porsche dealer has specially developed car-care products from the Porsche program available either singly or as complete car-care sets. They will be pleased to help you select suitable products.
Whether you use Porsche products or other commercially available cleaning agents first make sure of their correct application.
A Porsche that is well-cared for can look like new for years. It all depends on the amount of care the owner is willing to give the car.
Cleaning agents may be hazardous to your health. Most chemical cleaners are concentrates which require dilution. High concentrations might cause problems ranging from irritation to serious injury.fKeep cleaning agents out of reach from children.fObserve all caution labels.fAlways read directions on the container before using any product. These directions may contain information necessary to avoid personal injury.fDo not use fuel, kerosene, naphtha, nail polish remover or other volatile cleaning fluids. They may be toxic, flammable or hazardous in other ways. Only use spot removing fluids in a well vented area.fDo not clean the underside of chassis, fenders, wheel covers, etc., without protecting your hands and arms as you may cut yourself on sharp-edged metal parts.
Risk of damage to the vehicle or property from cleaning agents.fObserve all caution labels.
Information
Moisture and road salt on brakes may affect braking efficiency. fTest the brakes after each vehicle washing.
Chemical CleanersWARNINGh
NOTICE
14_991_Turbo_21.book Seite 231 Mittwoch, 9. April 2014 2:19 14
Page 234 of 300

232 Maintenance and Car Care
High-pressure cleaning equipment, steam cleaners
Risk of damage as a result of using high-pressure cleaning equipment, steam cleaners or similar.
High-pressure cleaning equipment, steam cleaners or similar can damage the following components:– Convertible top– Tires– Logos, emblems– Painted surfaces– Alternator– Electrical components and plug connections in the engine compartment– ParkAssist sensors– Radar sensor for adaptive cruise control– Reversing camerafAlways read the operating instructions provided by the equipment manufacturer.fAlways cover the lid of the brake fluid reservoir prior to cleaning. Never point the cleaning jet directly at the lid.fWhen cleaning with a flat-jet nozzle or a so-called “dirt blaster”, maintain a minimum distance of 20 in. (50 cm).fNever use high-pressure cleaning equipment or steam cleaners with a round-jet nozzle.A high-pressure cleaning device or steam cleaner fitted with a round nozzle will damage your vehicle. The tires are particularly susceptible to damage.fDo not point the cleaning jet directly at any of the aforementioned components.
Decorative film
Risk of damage due to separation of the decorative film when using high-pressure cleaning equipment, steam cleaners or similar cleaning equipment.fDo not use high-pressure cleaning equipment, steam cleaners, etc. to clean decorative films.
Care of door lock
fTo prevent the door lock from freezing during the cold season, cover the lock barrel with suitable adhesive tape while washing the vehicle.
If the lock still freezes, use an ordinary de-icer. In many cases, a well warmed key can help.fNever use excessive force.
Car washing
The best protection for the vehicle from the damaging effects of the environment is frequent washing and preservation.
The longer road salt, road dust, industrial dust, insect remains, bird excrement, and tree exudations (e.g. resin, pollen), etc. are allowed to remain on the bodywork, the more harmful their effect.
Observe the following points in order to ensure that the vehicle is washed thoroughly without damaging the paintwork: fThe underside of the vehicle should also be thoroughly washed at the end of the gritting season at the latest.fWash your vehicle only at sites provided for this purpose to prevent soot, grease, oil and heavy metals from entering the environment.
fNew cars should be washed carefully with plenty of clear water to protect the new paint work. Dark paint finishes show up the smallest of surface damage (e.g., scratches) more readily than lighter colors. Dark colors are slightly more susceptible to scratching and require particularly careful paint care.Dark paints make even the smallest surface blemishes (scratches) more conspicuous than lighter colors.fDo not wash your Porsche in direct sunlight or when its body is hot.fWhen washing by hand, use a car shampoo, plenty of water, and a soft sponge or washing brush.We recommend Porsche car shampoo.fStart washing the vehicle by thoroughly wetting the paintwork and rinsing the heavy dirt off.fAfter washing the vehicle, rinse it thoroughly with water and rub it dry with chamois-leather.Do not use the same chamois for rubbing dry as you use for cleaning the windshield and windows.
Reduced or uneven braking action may be caused by wet brakes.fAfter washing the vehicle, test the brakes and steering and briefly brake the disks dry.When doing so, make sure that vehicles traveling behind you are not affected.
NOTICENOTICE
Wet BrakesWARNINGh
14_991_Turbo_21.book Seite 232 Mittwoch, 9. April 2014 2:19 14
Page 235 of 300

Maintenance and Car Care 233
Cleaning in car washes
Optional add-on parts or parts that project beyond the contours of the vehicle may be damaged by design features of car washes.
The following parts are particularly at risk: – Convertible top (hot wax treatment must not be used, as the wax attacks the convertible top material),– Windshield wipers and rear wiper (always switch them off – wiper stalk in position 0 – to prevent them wiping unintentionally in intermittent or sensor operation).– Exterior mirrors (always fold in).– External antenna (always unscrew).– Roof transport system (always remove completely).– Spoilers.– Wheels (the wider the rim and the lower the tire height, the greater the risk of damage).– High-gloss or silk-gloss wheels (to prevent these from getting scratched, do not clean with the wheel-cleaning brushes of the car wash). fPlease consult the operator before using automatic car washes.fAll parts not reached by a car wash, such as door and lid seams or door sills, must be washed and polished by hand.
Information
Automatic car washes spray water at odd angles and high pressures, which are not seen in normal driving. Therefore, water can sometimes find its way into the passengers compartment during or shortly after the car wash.
Convertible top
The service life and appearance of the convertible top depend largely on expert care and operation.
Incorrect care and operation can damage the convertible top or cause it to leak.
Never remove snow and ice with sharp-edged objects.
Cleaning the convertible top
Risk of damage to the convertible top due to the cleaning jet of the high-pressure cleaning equipment or hot wax treatment. fDo not clean the convertible top with high-pressure cleaning equipment. fDo not use hot wax treatment.
Do not wash the convertible top every time you wash the vehicle.
Normally, rinsing the convertible top with clean water is sufficient.fBrush dust off the convertible top in the direction of the weave using a soft brush. fOnly in the case of heavy soiling, wet the convertible top with lukewarm water and a wash-shampoo & convertible-top cleaner and rub gently using a sponge or soft brush.Rinse off wash-shampoo & convertible-top cleaner thoroughly from the convertible top with clean water.We recommend Porsche wash-shampoo.fAfter washing, treat the convertible top at least once a year with a convertible-top care product.Do not allow the convertible-top care product to come into contact with paint or glass. If it does, remove immediately.
fIn the case of leakage in the convertible-top covering or at its seams and folds, use a convertible-top care product.fPlease observe the information on the containers.We recommend Porsche convertible-top care product.fRemove bird excrement immediately. The acid this contains makes the rubber swell and the convertible top will leak.fOpen the convertible top only when completely dry, otherwise damp stains and abrasion marks may occur which cannot be removed.fAttempt to remove spots from the convertible-top covering by rubbing carefully with a soft rubber sponge.
NOTICE
14_991_Turbo_21.book Seite 233 Mittwoch, 9. April 2014 2:19 14
Page 236 of 300

234 Maintenance and Car Care
Paint care
In order to protect the paint on your vehicle in the best possible way against mechanical and chemical damage, you should – preserve it regularly,– polish it if necessary,– remove spots and stains, and– repair damaged paintwork.fDo not apply care products containing silicone to the windows.
Information
fNever rub a dusty vehicle with a dry cloth, because the grains of dirt will damage the paintwork.fDo not treat matt-painted components with preservatives or polishes as these remove the matt effect.
Preservation
The paint surface becomes dull over time due to weathering.fPreserve paint regularly.fApply paint preservative after washing the vehicle and polish it smooth to preserve the paintwork.
This keeps the paint shiny and elastic. Dirt is prevented from adhering to the paint surface and industrial dust is prevented from penetrating the paint.
Polishing
Only when the original shine can no longer be obtained using preservatives should paint polish be used to clean the paint.We recommend Porsche paint polish.
Removing spots and stains
fRemove tar spatters, traces of oil, insects etc. as soon as possible using an insect remover, as they discolor the paint if left to work on it over time.fWash the treated areas carefully afterwards.
Repairing minor paint damage
fHave minor paint damage (cracks, scratches or stone damage) repaired immediately before corrosion begins. Please contact an authorized Porsche dealer.
If traces of corrosion have already formed, these must be thoroughly removed. An anti-corrosion primer must then be applied to these spots, followed by top-coat paint.
Paint data can be found on the vehicle data carrier.fPlease see the chapter “VEHICLE IDENTIFICATION NUMBER” on page 284.
Cleaning windows
fClean all windows regularly, inside and out, with window cleaner.We recommend Porsche window cleaner.fDo not use the same chamois for painted surfaces and for drying the windows.Preservative residues could reduce transparency.fRemove insect residues with insect remover.
Information
The door windows have a water-repellent (hydrophobic) coating, which prevents soiling of the windows.This coating is subject to natural wear and can be renewed.fPlease contact an authorized Porsche dealer.
Care of windshield wiper blades
Windshield wiper blades that are in perfect condition are vital for a clear view.fPlease see the chapter “WIPER BLADES” on page 224.
14_991_Turbo_21.book Seite 234 Mittwoch, 9. April 2014 2:19 14
Page 237 of 300

Maintenance and Car Care 235
Repairing the underbody protection
The underside of your car is durably protected against chemical and mechanical influences.
As it is not possible to exclude the risk of damage to this protective coating in day to day driving, it is advisable to have the underside of the car inspected at certain intervals - preferably before the start of winter and again in spring - and the undercoating restored as necessary.
Your authorized Porsche dealer is familiar with the bodyseal treatment procedures and has the necessary equipment for applying factory approved materials. We recommend that you entrust them with such work and inspections.
Unlike conventional spray oils, undercoating and rust-proofing compounds based on bitumen or wax do not attack the sound-proofing materials applied at the factory.
The exhaust system becomes very hot when the engine is running. Flammable material close to the exhaust system could ignite. Additional undercoating or rust protection agents on or near the exhaust system can become too hot when driving and ignite.fDo not apply additional undercoating or rust-proofing on or near the exhaust manifold, exhaust pipes, catalytic converters or heat shields. During driving the substance used for undercoating could overheat and ignite.
fBefore applying fresh underseal, carefully remove deposits or dirt and grease. Once it has dried, the new undercoating compound forms a tough protective coating which provides efficient rust-proofing of the floor panels and components.
fAlways apply a fresh coating of suitable preservative to unprotect areas after cleaning the underside of the body, the transmission, the engine or carrying out repairs to under-body, engine or transmission components.
Effective rust-proofing is particularly important during the cold weather season. If your car is driven frequently in areas where salt has been spread on the roads, the whole engine compartment should be cleaned thoroughly after the winter to prevent salt from causing any lasting damage. A full under-body wash should also be performed at the same time.
Cleaning headlights, lights, interior and exterior plastic components, adhesive foils, reversing camera and radar sensor for adaptive cruise control
Observe 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.fDo not spray water or interior window cleaner directly onto the plastic components in the passenger compartment, but first onto a sponge or cloth. Cleaning agents may, for example, enter controls or switches and cause damage.
Information
An interior window cleaner can also be used to clean plastic surfaces (always read the cleaning instructions on the container).We recommend Porsche interior window cleaner.fGently wipe the surface without applying too much pressure.fDo not clean when dry.
fNever use other chemical cleaners or solvents.fRinse cleaned surfaces with clear water.
Alloy wheels
Metal particles (e.g. brass or copper in brake dust) must not remain too long on alloy wheels.Contact corrosion can cause pitting.
Information
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 alloy rims.fIf 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.fEvery three months, after cleaning, grease the wheels with car wax or an acid-free grease (e.g. Vaseline).Rub the grease in well with a soft cloth.fPlease see the chapter “CLEANING IN CAR WASHES” on page 233.
Exhaust System Fire Risk
WARNINGh
14_991_Turbo_21.book Seite 235 Mittwoch, 9. April 2014 2:19 14
Page 238 of 300

236 Maintenance and Car Care
If cleaning agents (e.g. wheel cleaning agents) come into contact with the brake disks, the resulting film on the brake disks can impair braking performance.fMake sure that no cleaning agent comes into contact with the brake disks.fIf cleaning agent has come into contact with the brake disks, clean the brake disks thoroughly with a strong jet of water.fPaying attention to any road users behind you, dry the brake disks by applying the brakes.
Stainless steel tailpipes
Stainless steel tailpipes can discolor due to soiling, strong heat and combustion residues.
The original shine can be achieved again using commercially available metal luster paste or metal polish.
Cleaning door, roof, lid and window seals
The lubricant coating on the inner door seals may be damaged by unsuitable cleaning and care agents.fDo not use any chemical cleaning agents or solvents.fDo not use any preservative agents.
fWash dirt (e.g. abrasion, dust, road salts) from all seals regularly using warm soapy water.fIf there is a risk of frost, protect the outer door seals and the lid and flap seals against freezing into place with a suitable care product.
Leather care
The natural surface markings of leather, e.g. creases, healed scars, insect sting marks, structural differences and slight variations in shade and grain add to the attractiveness of the high-quality natural leather product.
Observe the following care instructions:
The leather will be damaged by the use of unsuitable cleaning and care agents and by inappropriate treatment.fDo not use caustic cleaners or hard cleaning objects!fMake sure that perforated leather does not get wet on its reverse side.fRemove water drops from the leather without delay.
fClean all types of leather regularly to remove fine dust using a soft, damp, white woolen cloth or a commercially available microfiber cloth.fRemove heavy contamination (not water or moisture stains) with a leather cleaner.Always read the instructions for use given on the containers.We recommend Porsche leather care liquid.fTreat cleaned leather only with a leather care product.We recommend Porsche leather care liquid.
Seats with seat ventilation
Care instructions for water or moisture stains.
Rain water or moisture can stain the perforated leather.
Removing water and moisture stains
Preconditions: – Seat heating and seat ventilation must be switched off.– No direct sunlight.– Do not use leather cleaners or care products to remove water and moisture stains.fBlot the entire seat or backrest surface using a clean, absorbent sponge and distilled water.Make sure that the perforated leather does not get wet on its reverse side.fAllow the seat covering to dry completely at room temperature out of direct sunlight.Do not dry the seat covering by switching on the seat heating and seat ventilation.fOnce dry, wipe the seat covering with a dry, lint-free cloth.
Cleaning carpet, floor mats
fUse a vacuum cleaner or a brush (not too soft) for cleaning.fHeavy dirt and stains can be removed with a stain remover.We recommend Porsche stain remover.
To protect carpets, the Porsche range of accessories includes mats of the correct size and with the appropriate fastening.
Cleaning Agents on Brake Disks
WARNINGh
NOTICE
NOTICE
14_991_Turbo_21.book Seite 236 Mittwoch, 9. April 2014 2:19 14
Page 239 of 300

Maintenance and Car Care 237
Improperly secured floor mats can obstruct pedal travel.fAlways check the movement of the pedals before driving and make sure that they are not obstructed by a floor mat or any other object.fSecure the floor mat to prevent it from sliding into positions that could interfere with the safe operation of your vehicle – do not lay them loosely in the vehicle.Your authorized Porsche dealer will be glad to offer you floor mats of correct size including a securing possibility.
Cleaning airbag covers
Incorrect modifications may damage the airbag system. The airbag may not deploy properly in the event of an accident.fDo not make any modifications whatsoever to individual components, such as the padded covers on the steering wheel, the instrument panel, the underside of the instrument panel, front seats and door panels.fHave your authorized Porsche dealer to clean these components.
Cleaning fabric linings
fFabric linings on pillars, roofliner and sun blinds, etc. must be cleaned only using suitable cleaning agents or a suitable dry foam and a soft brush.
Alcantara® care
Do not use leather care products to clean Alcantara®. Alcantara® is a manufactured product. It is not genuine leather or suede.
For regular care, it is sufficient to clean the cover with a soft brush.
Strong abrasion or rubbing when cleaning will produce a lasting change to the surface.
Cleaning when lightly soiled
fWet a soft cloth with water or a neutral soap solution and wipe off the dirt.
Cleaning when heavily soiled
fWet a soft cloth with lukewarm water or thinned white spirit and dab the dirt from the outside in.
Cleaning the safety belts
fUse mild detergent to clean soiled belts.fWhen drying, avoid direct sunlight.fOnly use suitable cleaning agents.fDo not tint or bleach the belts.The belt fabric could be weakened, thus affecting safety.
Storing your Porsche
If you intend to store your Porsche for a prolonged period, please consult your authorized Porsche dealer. The staff will be glad to advise you on the most suitable and necessary methods. fClean your vehicle thoroughly inside and outside. The under carriage and chassis components should be free of dirt and salt deposits. fFill up the fuel tank. fChange the oil and oil filter, and run the engine for several minutes. fIncrease the tire pressure to 50 psi/3.5 bar/350 kPa.It is not recommended to lift the vehicle, due to the possibility of corrosion on shock absorber piston shafts.The vehicle should be moved slightly, approximately every four weeks, to prevent flat spot on the tires.
Climate control
The air conditioning system should be in good working condition and fully charged.
Windshield/Headlight washer
fCheck and correct antifreeze/cleaning solution level as necessary.
Obstructed Pedals
Vehicle Interior Modifications
WARNINGh
DANGERh
14_991_Turbo_21.book Seite 237 Mittwoch, 9. April 2014 2:19 14
Page 240 of 300
238 Maintenance and Car Care
Electrical system
fRemove the battery from the vehicle and store it in a cool dry place, not on a cement floor. When the battery is disconnected, the alarm system is deactivated. fRecharge the battery every 3 months. If the battery remains in the vehicle with the cables connected, it is necessary to check, remove and recharge the battery every 2-3 weeks. Do not fast charge the battery. fPlease see the chapter “BATTERY (12 VOLT)” on page 271.
Vehicle interior
The interior must be dry, especially in the area of the floor carpets. The use of drying agents (Silica-Gel) is recommended in vehicles with leather interior and in areas with high humidity. The recommended amount is 3 fabric bags of 1.1 lbs. (500 grams) each placed on the floor carpets.
Windows, doors and lids must be closed. The air vents should be opened.
14_991_Turbo_21.book Seite 238 Mittwoch, 9. April 2014 2:19 14