Engine VOLKSWAGEN TIGUAN 2008 Workshop Manual

WARNING
Even if empty, portable fuel containers can leak and cause a fire and serious personal injuries, especially in a crash.
x For your safety, we strongly recommend that you do not travel with a portable fuel container in your vehicle.
x If, under exceptional circumstances, you must transport a portable fuel container, please observe the following:
– Never fill a portable fuel container while it is anywhere in or on the vehicle (for example, in the luggage compartment or on the rear hatch). Static electricity can build up while filling and can ignite fuel vapors, causing a fire.
– Always place a portable fuel container on the ground before filling. Never spill fuel inside the vehicle or luggage compartment. Fuel vapors are highly flammable.
– Always keep the filler nozzle completely inside the portable container before and during filling.
– If filling a portable container made of metal, the filler nozzle must always be in contact with the container. This will help prevent static electricity from discharging and causing a fire.
– Always observe local and state or provincial laws about the use, storage, and transportation of portable fuel containers.
– Make certain that the portable fuel container meets industry standards, such as ANSI/ASTM F852-86.
NOTICE
x Remove fuel spills from the vehicle immediately to help prevent damage to the paint, tires, and wheel housings.
x Refueling with diesel fuel when your vehicle has a gasoline engine can cause very serious and expensive engine and fuel system damage that is not covered by any Volkswagen Limited Warranty.
x If you put any amount of incorrect fuel in the fuel tank, do not start the engine under any circumstances. Immediately contact the nearest authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance. These fuels contain substances that can severely damage the fuel system and the engine if the engine is started.
Fuels can pollute the environment. Spilled fuel must be collected and disposed of properly, following all applicable environmental regulations.
There is no emergency release for the fuel filler flap. Contact an authorized Volkswagen dealer or an authorized Volkswagen Service Facility for assistance.

WARNING
Driving with a fuel tank that is almost empty can lead to stalling in traffic, a collision, and serious personal injuries.
x When the fuel tank is almost empty, fuel supply to the engine can be interrupted, especially when driving over bumps, across slopes, and up and down hills.
x Steering and braking assistance as well as ESC and related systems will not work if the engine “sputters” or stalls due to lack of fuel.
x Always refuel when the tank is 1/4 full to reduce the risk of running out of fuel and stalling in traffic.
NOTICE
x Failure to heed warning lights or text WARNINGS can result in vehicle damage.
x Never drive until the fuel tank is completely empty. The irregular fuel supply can cause the engine to misfire. This allows unburned fuel to get into the exhaust system and damage the catalytic converter.
The small arrow next to the gas pump symbol in the fuel gauge ⇒ fig. 161 shows the side of the vehicle with the fuel filler flap.
Refueling

Fig. 162 Right rear side of vehicle: Opening the fuel filler flap.

Fig. 163 Fuel cap placed on the open fuel filler flap.

Before refueling, always switch off the engine, the ignition, and all mobile phones, and leave them switched off until refueling is complete.
Opening the fuel filler cap
x Unlock the vehicle from the outside with the vehicle key or press the central locking button in driver
door to unlock the vehicle from the inside ⇒  Power locking system.
x The fuel filler flap is located at the right rear of the vehicle.
x Press on the back part of the fuel filler flap ⇒ fig. 162 (arrow) and fold open.
x Unscrew fuel cap counterclockwise and remove. Use the receptacle on the filler flap hinge to hold
the cap while refueling ⇒ fig. 163.
Refueling
The correct fuel grade for your vehicle ⇒  Fuel is listed on a sticker on the inside of the fuel filler flap
⇒ fig. 163.
x The fuel tank is full when the automatic filler nozzle pump switches off the first time ⇒ .
x Do not try to add fuel after the pump stops! Topping off the tank in this way may fill the expansion space that the tank needs and cause fuel to overflow, for example, if it gets warmer outside.
Closing the fuel filler cap
x Screw the fuel cap clockwise onto the fuel filler neck until you hear it click into place.
x Close the fuel filler flap until you hear it latch shut. The fuel filler flap must be flush with the vehicle body.
WARNING
Spilled fuel can cause fires, explosions, burns, and other severe injuries.
x Always stop refueling once the pump nozzle switches off so that the tank does not overflow.
NOTICE
Remove fuel spills from all vehicles surfaces immediately to help prevent damage to the paint, tires, and wheel housings.
Fuel spills may pollute the environment.
Fuel capacities

If unleaded Premium grade gasoline is specified for your vehicle, then Volkswagen recommends using TOP TIER Detergent Gasoline with a minimum octane rating of 91 AKI (95 RON). For more information on TOP TIER Detergent Gasoline, please go to the official website http://www.toptiergas.com.
The gasoline grades most commonly sold in the United States and Canada have the following octane ratings, which can usually be found on the filler pump:
x Premium grade: 91 to 96 AKI
x Regular grade: 87 to 90 AKI
Unleaded gasoline
Unleaded gasoline is available throughout the USA and Canada. Volkswagen recommends that you do not take your vehicle to places where unleaded gasoline may not be available.
Gasoline containing alcohol or MTBE
You may use unleaded gasoline blended with alcohol or MTBE (methyl tertiary butyl ether), commonly referred to as oxygenated fuels, if the blended mixture meets the following criteria:
Blends of gasoline and methanol (wood alcohol or methyl alcohol):
x Anti-Knock Index (AKI) must be 87 or higher.
x Blend must contain no more than 3% methanol.
x Blend must contain more than 2% co-solvents.
Blends of gasoline and ethanol (grain alcohol or ethyl alcohol):
x Anti-Knock Index (AKI) must be 87 or higher.
x Blend must contain no more than 15% ethanol.
Blends of gasoline and MTBE:
x Anti-Knock Index (AKI) must be 87 or higher.
x Blend must contain no more than 15% MTBE.
Seasonally adjusted gasoline
Many fuels are blended especially for winter or summer conditions. When seasons change, Volkswagen suggests that you buy fuel at busy stations where the seasonal adjustment is more likely to be made earlier.
WARNING
Starting fluids can explode and cause a “run-away” vehicle condition.
x Never use starting assist fluids.
NOTICE
x Never use fuel with an octane rating lower than 87 AKI/91 RON. Using lower octane fuel may cause expensive engine damage.
x Never use leaded gasoline! Leaded gasoline will severely damage your vehicle's catalytic converter.
x Methanol-blended fuels that do not meet the criteria listed above may cause corrosion and may damage plastic and rubber parts in the fuel system.
x Never use fuels that contain lead or other metals (check listing on the fuel pump). Even lead replacement gasoline (LRP fuels) contain metallic additives in high concentrations. They can damage the engine.

x Do not use fuels that fail to meet the criteria above, or with contents that cannot be identified.
x If you cannot tell whether a particular fuel blend meets the criteria above, ask your service station or its fuel supplier. If you notice a loss of fuel economy or drivability and performance problems using one of these fuel blends, we recommend that you switch to unblended fuel.
x Using fuels that are different from those specified above can damage your vehicle's engine and fuel system and cause performance problems.
x Damage to the engine and fuel system and performance problems caused by using fuels that are different from those specified above or by using “starting assist fluids” are not the responsibility of Volkswagen and are not covered under the Emission warranties or any other Volkswagen Limited Warranty.
Even a single tank full of leaded fuel can do major damage to the catalytic converter and degrade its effectiveness in reducing polluting emissions.
If you notice a loss of fuel economy or drivability and performance problems using one of these fuel blends, we recommend that you switch to unblended fuel. Never use fuel line antifreeze offered for gasoline engines.
Gasoline additives

x Do not use fuel that is labeled at the pump as containing metal. Lead replacement fuel contains high concentrations of metallic additives. Engine damage could result.
x Fueling your vehicle just one time with leaded fuel or fuel that contains other metallic additives can affect the performance of the catalytic converter and cause extensive damage to it.

WARNING
Inadequate experience and knowledge of the demands of off-road driving can lead to critical situations and cause serious personal injury.
x Never take routes or risks that could put you or your passengers in danger. If you cannot go on, or have doubts about the safety of your route, turn back and take a new route.
x The intelligent technology of the vehicle cannot change the laws of physics. Despite the ABS, adverse terrain can cause instability through blocked wheels – for example, if you brake hard when driving on a loose gravel road. Difficult terrain may also prevent the ESC from doing its job.
x Never operate the vehicle at the limit of its performance ability. Always leave a good safety margin.
x To reduce the risk of loss of control and serious personal injury, never use the cruise control when driving off-road.
x Even terrain that looks easy can be difficult and dangerous, putting you and your passengers in a critical situation. It is often best to check an area out on foot first.
x Drive with special care and think ahead in off-road terrain. If you drive too fast, or fail to maneuver the vehicle properly, you could cause personal injury and damage the vehicle.
x Never drive faster than is appropriate for the prevailing terrain and the road, traffic, and weather conditions.
x Never drive too fast across embankments, ramps, or slopes. The vehicle could become airborne. If that happens, you will not be able to steer and can lose control.
x If your vehicle becomes airborne, always keep the front wheels pointing straight ahead. If the wheels are not pointing straight ahead when the vehicle lands, it could roll over.
x Never allow people to stand in front of or behind the vehicle if you have put items such as stones or pieces of wood under the wheels to improve traction on slippery ground. Spinning wheels can turn these items into dangerous flying objects causing serious personal injury.
x Even areas that look harmless can be dangerous. Potholes, ditches, trenches, drop-offs, different kinds of obstacles, and soft or swampy ground often cannot be seen and can be partially or fully covered by water, grass, branches, or other things. Driving over such terrain can cause accidents and severe injuries. Before crossing an unknown area, carefully explore the route you plan to take on foot.
WARNING
Never drive off-road if you are low on fuel. Too little fuel in the tank can cause an accident and serious injuries. You can also run out of fuel in a remote area where getting help is difficult or impossible.
x When the fuel tank is almost empty, fuel supply to the engine can be interrupted, especially when driving over bumps, across slopes, and up and down hills. The interruption in fuel flow could stall the engine during a maneuver in difficult terrain and make you lose control of the vehicle.
x Steering and braking assistance as well as ESC and related systems will not work if the engine “sputters” or stalls due to lack of fuel. This can cause loss of vehicle control, especially in difficult terrain.
x Always refuel when the tank is 1/4 full to reduce the risk of running out of fuel.
NOTICE
If the power sunroof or the windows are open when it rains or snows, the interior of the vehicle will get wet and the vehicle may be damaged. Always keep the windows and the power sunroof closed when driving off-road.

WARNING
Off-road driving can be dangerous, can lead to accidents, vehicle damage, stranding in remote areas, and serious personal injury.
x Never drive too fast or for terrain and weather conditions.
x Always adjust your speed and driving style to road, terrain, traffic, and weather conditions.
x Always avoid sudden, sharp maneuvers that increase the risk of loss of vehicle control or getting stuck.
x When driving off-road look and think ahead, expect the unexpected.
x To reduce the risk of loss of control and serious personal injury, never use the cruise control when driving off-road. Cruise control is designed for highway use. It is completely unsuitable for off-road situations and can even be dangerous when used off-road.
NOTICE
Always make sure the vehicle has enough ground clearance. Severe damage to the underbody can occur if the vehicle bottoms out. The damage could disable the vehicle and leave you stranded.
x While driving off-road do not drag the clutch or rest one foot on the clutch pedal. Otherwise, in bumpy terrain you might press the clutch accidentally, resulting in loss of vehicle control. In addition, the frictional connection between the engine and transmission is lost. Further, driving while dragging the clutch causes fast wear of the clutch lining.
“Tread lightly” is an educational program designed to increase public awareness of land use regulations and responsibilities in our nation's wilderness areas. Volkswagen supports the U.S. Forest Service and the Bureau of Land Management in encouraging you to preserve our national forests and other public and private lands by “treading lightly”.
Technical terms explained

Fig. 164 Illustration of A: Ascent angle. B: Lateral gradient.

be lower on hard, firm surfaces if ideal conditions do not exist. As the driver, you are always
responsible for deciding whether your vehicle is able to handle a particular situation ⇒ .

Term Explanation Technical data
Ground clearance This is the vertical distance between the level ground and the lowest part on the vehicle.
Maximum 7.6 in (195 mm).
Fording depth in standing water Distance between the point on the ground that touches the tire and the engine air intake duct.
Maximum 6.9 inches (175 mm).
Gradient angle The number of feet (meters) in altitude gained when traveling 100 ft (30.48 m) is given as a percentage or in degrees
⇒ fig. 164 A. Information on the maximum slope the vehicle can climb unassisted (depends on road surface and engine power).
Maximum permissible 31 degrees (corresponds to 60 %).
Lateral angle (vehicle slope) The maximum angle the vehicle may be driven across terrain without the vehicle rolling over (depends on height of center of
gravity) ⇒ fig. 164 B.
Maximum permissible 27 degrees.
Breakover angle Maximum permitted angle given in degrees that a vehicle driven at low speed can clear a ramp without the underbody of the vehicle scraping the ramp.
Maximum 21.3 degrees.
Approach/departure angle Transition from horizontal plane to a slope, or from a slope to flat ground. Maximum angle in degrees the vehicle can be driven at low speed along an embankment without the bumper or underbody scraping.
Approach angle for off-road front end: Maximum 28 degrees.
Departure angle: Maximum 25 degrees.
Fall line This is the vertical drop route.
Articulation Articulation capability of the vehicle while driving on one side over an object.

WARNING
Never exceed the recommended maximum values in the above table. Exceeding these values will result in serious personal injury and/or damage to your vehicle.
x All values listed above are for ideal conditions and assume firm, even surfaces that are dry and not slippery.
x Off-road conditions will always be less than ideal. Always reduce the maximum values listed in the table above to allow an adequate margin of safety between the ideal maximum value and your vehicle's actual off-road situation.

Leaking engine oil and brake fluid can pollute the environment. Collect leaking operating fluids and dispose of them properly in accordance with applicable environmental laws and regulations.
Driving through water