2018 VOLKSWAGEN TIGUAN alternator

Depending on the vehicle equipment level, symbols may be displayed in the instrument cluster
instead of warning lamps.
Some warning and indicator lamps are not available in all markets.
For details on indicator lamps which light up in the light switch, see Chapter Lights ⇒ Lights.
SymbolMeaning
Central warning lamp. Observe the additional information on the
instrument cluster display.
Do not drive on!
The electronic parking brake is switched on ⇒ Electronic parking 
brake.
Do not drive on!
Brake fluid level too low or fault in the brake system ⇒ Brake fluid.
Do not drive on!
Coolant level too low ⇒ Engine coolant, engine coolant temperature
too high or fault in the cooling system ⇒ Coolant temperature display.
Do not drive on!
Engine oil pressure too low ⇒ Engine oil.
Flashing: Do not drive on! Fault in the electronic steering column
lock ⇒ Steering.
Lit up: electromechanical steering has failed ⇒ Steering.
Driver or front passenger seat belt not fastened ⇒ Seat belts.
OR: there are objects on the front passenger seat ⇒ Seat belts.
Brake or take evasive action.
Collision warning from area monitoring system (Front Assistyf ⇒ Area 
monitoring system (Front Assistyf.
OR: collision warning from Pedestrian Monitoring ⇒ Pedestrian 
Monitoring.
Depress the brake pedal. ⇒ DSG dual clutch gearbox, ⇒ Adaptive 
Cruise Control (ACCyf.
Fault in the alternator ⇒ 12-volt vehicle battery.
Front brake pads worn. Go to a qualified workshop immediately. All
brake pads should be checked and renewed as necessary
⇒ Information on the brakes.
Central warning lamp. Observe the additional information on the
instrument cluster display.
Electronic Stability Control (ESCyf ⇒ Brake support systems.
Traction control system (TCSyf ⇒ Brake support systems.
OR: off-road driving profile active ⇒ Driving profile selection and 
4MOTION Active Control.
Anti-lock brake system faulty or not functioning ⇒ Brake support 
systems.
Electronic parking brake fault ⇒ Electronic parking brake.
Rear fog light switched on ⇒ Lights.
Partial or complete failure of the vehicle lighting, excluding cornering
light ⇒ Changing bulbs.
Lit up: there is a fault that affects the exhaust emissions
⇒ Troubleshooting.
Flashing: misfiring, which damages the catalytic converter
⇒ Troubleshooting.
Engine management system fault (Electronic Power Controlyf
⇒ Troubleshooting.
Engine speed limited (protection against overheatingyf
⇒ Troubleshooting.
Lit up: electromechanical steering reduced
OR: the 12-volt battery has been disconnected and reconnected
⇒ Steering.
Flashing: steering column is wound-up or is not unlocked/locked
⇒ Steering.
Lit up: tyre pressure too low ⇒ Tyre monitoring systems.
Flashing: fault in tyre monitoring system ⇒ Tyre monitoring systems.
Fault in the rain/light sensor ⇒ Wipers.
Fault in wipers ⇒ Wipers.
Washer fluid level too low ⇒ Wipers.
Fuel tank almost empty ⇒ Fuel gauge.
Lit up: engine oil level too low ⇒ Engine oil.
Flashing: engine oil system fault ⇒ Engine oil.
®

m/k/a995MK Vehicles with manual gearbox: change from first to second gear immediately
after setting off. Change to higher gears rapidly.
m/k/a995MK Vehicles with DSG dual clutch gearbox: accelerate slowly and avoid using the
kickdown function.
Gear-change indicator ⇒ Gear-change indicator.
Eco driving profile ⇒ Driving profile selection and 4MOTION Active Control.
Avoid full throttle
Never fully use the maximum speed of the vehicle. Driving at excessive speeds, e.g. above 130
km/h on the motorway, will increase air resistance and thus the amount of force needed to move
the vehicle.
Reduce idling
Drive off immediately with low revs. If you are stopped for a long period, do not allow the engine to
idle but switch it off, e.g. when in a traffic jam or at a railway crossing.
In vehicles with an activated start/stop system, the engine will switch off automatically when the
vehicle is stopping and when the vehicle is stationary ⇒ Start/stop system .
Refuel with moderation
A full fuel tank increases the weight of the vehicle. A fuel tank that is half to three quarters full is
sufficient for urban journeys in particular.
Avoid short journeys
A cold engine has a very high fuel consumption. The optimum operating temperature is reached
only after driving a few miles. The fuel consumption is above average at very low ambient
temperatures, e.g. in winter ⇒ Fig. 116. Plan journeys economically and combine short distances.
Carry out regular maintenance
Regular maintenance is an essential prerequisite for economical driving and increases the service
life of the vehicle.
Observe the correct tyre pressures
An inadequate tyre pressure does not just mean greater wear, but also increases the rolling
resistance of the tyres and thus the fuel consumption. Use optimised rolling resistance tyres.
Adjust the tyre pressure according to the vehicle load. Observe the information on the tyre pressure
sticker ⇒ Useful information about wheels and tyres
Tyre Pressure Loss Indicator or Tyre Pressure Monitoring System ⇒ Tyre monitoring systems.
Use low viscosity engine oil
Fully synthetic engine oils with a low viscosity decrease frictional resistance in the engine and
spread better and more quickly, especially for cold starts.
Do not drive with unnecessary loads in the vehicle
You can reduce fuel consumption by clearing out the luggage compartment before setting off, for
example by removing empty drink crates or unused child seats.
In order to keep the drag coefficient of the vehicle as low as possible, remove attachments and
add-on parts such as ski, bicycle or roof carriers after use.
Save electrical energy
The alternator is driven by the engine and generates power for convenience consumers such as the
air conditioning system, window heating and ventilation. Saving electrical energy is easy, e.g.:
•At high ambient temperatures, ventilate the car before starting a journey and drive a short
distance with open window. Only then switch on the air conditioning system.
•Switch off convenience systems as soon as they have served their purpose.
Adapt your speed and distance from the vehicles ahead to suit visibility, weather, road
and traffic conditions.
WARNING

Park the vehicle on a level and stable surface.
Depress and hold the brake pedal until you have switched off the ignition.
Switch on the electronic parking brake Electronic parking brake.
Select the neutral position Manual gearbox: selecting a gear or move the selector lever to
position P DSG® dual clutch gearbox.
Switch off the ignition and remove the vehicle key from the ignition lock Starting and
stopping the engine.
Service fluids leaks are harmful to the environment. So you should regularly check the
ground underneath your vehicle. If there are spots of oil or other service fluids on the ground, the
vehicle should be inspected by a qualified workshop. Any spilt service fluids must be disposed of
properly.
Preparing the vehicle for working in the engine compartment
Checklist
The following steps should always be carried out in the specified order before working in
the engine compartment ⇒:
There are rotating components in the engine compartment that can cause serious injury.
•Never place your hand near these components or in the radiator fan. Touching the
rotary blades can result in serious injuries. The fan is temperature-controlled and can
start automatically, even if the ignition has been switched off and the vehicle key has
been removed from the ignition lock.
•If any work has to be performed when the engine is started or with the engine running,
there is an additional, potentially fatal, safety risk from the rotating parts, such as the
poly V-belts, alternator, radiator fan etc., and from the high-voltage ignition system.
Always be particularly careful.
- Always ensure that no body parts, jewellery, ties, loose items of clothing or long
hair can be caught up in rotating engine components. Before starting work,
remove any jewellery and ties, tie up long hair and pull clothes in tightly to avoid
them getting caught in the engine compartment.
- Always take due care and attention when depressing the accelerator. The vehicle
could move, even if the electronic parking brake is applied.
•Always ensure you have not left any objects, such as cleaning cloths and tools, in the
engine compartment. Any forgotten items can cause malfunctions, engine damage and
fires.
WARNING
Additional insulating materials such as covers in the engine compartment could disrupt
the operation of the engine, start fires and lead to severe injuries.
•Never cover the engine with any insulating materials.
WARNING
Service fluids and some materials in the engine compartment are highly flammable and
can cause fires and serious injuries!
•Never smoke in the vicinity of the engine compartment.
•Never work near naked flames or sparks.
•Never spill fluids onto the engine. They could ignite on hot engine components and
hence cause injuries.
•Please note the following when carrying out any work on the fuel system or the
electrical system:
- Always disconnect the 12-volt vehicle battery. Ensure that the vehicle is
unlocked when the 12-volt vehicle battery is disconnected as otherwise the anti-
theft alarm will be activated.
- Never work in the direct proximity of heating systems, water heaters or any other
open flames.
•Always have a fully functional and tested fire extinguisher to hand.
WARNING
When topping up or changing service fluids, ensure that you pour the correct service
fluids into the correct openings. The use of incorrect service fluids could result in serious
malfunctions and engine damage.
NOTICE

•Switch off all electrical consumers and the ignition.
•Unlock the vehicle before disconnecting the battery in order to avoid triggering the anti-theft
alarm.
•First disconnect the negative cable and then the positive cable ⇒.
Connecting the 12-volt vehicle battery
•Switch off all electrical consumers and the ignition before reconnecting the 12-volt vehicle
battery.
•First reconnect the positive cable and then the negative cable ⇒.
Various indicator lamps may light up after the 12-volt vehicle battery has been connected and the
ignition is switched on. They will go out if you drive a short distance at a speed of approximately
15 – 20 km/h (10 – 12 mphyf,IWKHLQGLFDWRUODPSVUHPDLQOLWXSWKHYHKLFOHVKRXOGEHFKHFNHGE\D
qualified workshop.
If the 12-volt vehicle battery was disconnected for an extended period, the system may not able to
calculate or correctly display the time when the next service is due ⇒ Instrument cluster. Observe
the maximum permissible service intervals ⇒ Service.
Vehicles with Keyless Access:⇒ Central locking system: if the ignition cannot be switched on after
connecting the 12-volt vehicle battery, lock and unlock the vehicle from the outside. Then try to start
the ignition again. Please contact an expert if the ignition cannot be switched on.
Automatic switch-off for electrical consumers
The intelligent vehicle electrical system management automatically implements a range of
measures to prevent the 12-volt battery from discharging under high loads:
•The idling speed is increased so that the alternator provides more electricity.
•The performance of large electrical consumers may be reduced or they may be switched off
completely.
•The power supply to the 12-volt socket and the cigarette lighter is interrupted temporarily while
the engine is being started.
The vehicle electrical system management function cannot always prevent the 12-volt vehicle
battery from discharging. For example when the ignition is switched on for an extended period with
the engine off, or when the side or parking lights are on when the vehicle is parked for an extended
period.
Battery switch-off in an accident in which the airbag is triggered
In vehicles with 12-volt vehicle battery in the luggage compartment, the electrical connection to the
12-volt vehicle battery is disconnected pyrotechnically in the event of an accident in which the
airbags are triggered. This prevents short-circuiting.
What can cause the 12-volt vehicle battery to discharge?
•Long periods at a standstill in which the engine is not running, especially if the ignition is
switched on.
•The use of electrical consumers when the engine is switched off.
•When the auxiliary heater is being used ⇒ Auxiliary heater and ventilation.

Dispose of the 12-volt vehicle battery in accordance with the regulations. 12-volt vehicle
batteries may contain toxic substances such as sulphuric acid and lead.
Electrolyte can pollute the environment. Clean up any service fluid leakages and dispose of
them properly.
Troubleshooting
First read and observe the introductoryinformation and safety warnings⇒
Introduction
12-volt vehicle battery
Fault in the alternator. Go to a qualified workshop. Have the electrical system checked. Switch
off any electrical consumers that are not required. The 12-volt vehicle battery will not be charged by
the alternator while the vehicle is in motion. The start/stop system cannot start the engine.
⇒ Start/stop system 
Wheels and tyres
Tyre monitoring systems
Introduction
This chapter contains information on the followingsubjects:
⇒ Types of tyre monitoring systems
⇒ Tyre Pressure Loss Indicator
⇒ Tyre Pressure Monitoring System
⇒ Troubleshooting for the Tyre Pressure Loss Indicator
⇒ Troubleshooting for the Tyre Pressure Monitoring System
The tyre monitoring system warns the
driver when the tyre pressures get too
low.
Incorrectly securing the battery and using incorrect 12-volt vehicle batteries can cause
short circuits, fire and serious injuries.
•Always use maintenance-free and leak-proof 12-volt vehicle batteries that have the
same properties, specifications and dimensions as the factory-fitted 12-volt vehicle
battery.
•In vehicles with the 12-volt vehicle battery in the luggage compartment, ensure that the
breather hose is connected properly to the 12-volt vehicle battery. Make sure that no
open gas discharge openings are located in the area around the positive battery
terminal. If there is an open breather opening in this area, it must be closed off with a
sealing plug. The breather hose must be connected to the open breather opening in the
area of the negative terminal.
WARNING
A highly explosive mixture of gases is given off when the 12-volt vehicle battery is being
charged.
•12-volt vehicle batteries should only be charged in well-ventilated spaces.
•Never charge a 12-volt vehicle battery that is frozen or that has thawed. Discharged 12-
volt vehicle batteries can already freeze at temperatures of around 0°C (+32°Fyf.
•The 12-volt vehicle battery must be replaced if it has ever been frozen.
•Incorrectly connected cables can cause a short circuit. First connect the positive cable
and then the negative cable.
WARNING
•Never connect or disconnect 12-volt vehicle batteries if the ignition is switched on or
the engine is running. Never use a 12-volt vehicle battery that does not correspond with
the vehicle's specifications. This can damage the electrical system or electronic
components, which can cause electrical faults.
•Never connect equipment that supplies electric power, such as solar panels or a
battery charger, to the 12-volt socket or to the cigarette lighter to charge the 12-volt
vehicle battery. This can damage the vehicle electrical system.
NOTICE