2018 VOLKSWAGEN TIGUAN battery replacement

Fig. 62 Vehicle key: replacing the button cell.
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Key to ⇒ Fig. 62:
Remove the cover.
Remove the button cell.
Volkswagen recommends having the button cell changed at a Volkswagen dealership or by a
qualified workshop ⇒.
•Fold out the key bit.
•Lever off the cover ⇒ Fig. 62①⇒.
•Lever the button cell out of the battery compartment ⇒ Fig. 62②.
•Press the new button cell into the battery compartment ⇒ Fig. 62②⇒.
•Press the cover onto the housing ⇒ Fig. 62①.
Dispose of discharged batteries in accordance with regulations governing the protection of
the environment.
Troubleshooting
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Synchronising the vehicle key
If the vehicle cannot be locked or unlocked with the vehicle key, synchronise the vehicle key or
replace the button cell (batteryyf ⇒ Changing the button cell.
•Fold out the key bit.
•Remove the cap on the driver door handle ⇒ Unlocking or locking the driver door manually.
•Stand next to the vehicle.
•Press the button on the vehicle key.
•Unlock the vehicle using the key bit.
•Fit the cap ⇒ Doors.
The synchronisation process is complete.
Indicator lamp does not flash
If the indicator lamp in the vehicle key does not flash, the button cell (batteryyfLQWKHYHKLFOHNH\
needs to be changed ⇒ Changing the button cell.
Replacement key
You will need to quote the vehicle identification number when ordering a vehicle key.
Several vehicle keys can be authorised for one vehicle.
You can obtain new vehicle keys at a Volkswagen dealership or qualified workshop.
The function of the vehicle key can be affected temporarily if there is more than one
transmitter in the direct vicinity working on the same frequency (e.g. a two-way radio or mobile
telephoneyf.
Obstacles between the vehicle key and the vehicle, bad weather conditions and a weak
button cell reduce the operating range.
If the buttons on the vehicle key ⇒ Fig. 61 or one of the central locking buttons ⇒ Central 
locking system are pressed repeatedly within a short period of time, the central locking system will
switch off briefly to prevent overloading. The vehicle will then be unlocked. Lock the vehicle if
necessary.
•The vehicle key can be damaged if the battery is not changed properly.
•Unsuitable batteries can damage the vehicle key. Replace discharged batteries only
with new batteries of the same voltage rating, size and specification.
•Ensure that the battery is fitted the right way round.
NOTICE

Vehicles with auxiliary heater ⇒ Auxiliary heater and ventilation and vehicles with the 12-volt
battery in the luggage compartment are fitted with special batteries. The acid level of these 12-volt
vehicle batteries cannot be checked for technical reasons. Go to a qualified workshop to have the
12-volt vehicle battery checked.
Preparation (vehicles with 12-volt battery in the engine compartmentyf
•Preparing the vehicle for working in the engine compartment ⇒ In the engine compartment.
•Open the bonnet ⇒ In the engine compartment.
Opening the cover of the 12-volt vehicle battery
To open, fold the cover open in the direction of the arrow ⇒ Fig. 232.
To close, fold the cover against the direction of the arrow ⇒ Fig. 232.
Checking the electrolyte level (12-volt vehicle batteries with battery
windowyf
•Ensure that enough light is available for you to clearly see the colours in the round window on
the top of the 12-volt vehicle battery ⇒ Fig. 233 (arrowyf1HYHUXVHQDNHGIODPHVRUJORZLQJ
matter (e.g. cigarettesyfDVDOLJKWVRXUFH.
•The colour displayed in the round viewer changes according to the electrolyte level in the
battery.
Light yellow or without colourThe electrolyte level of the 12-volt vehicle battery is too low. The 12-
volt vehicle battery should be checked by a qualified workshop and replaced if necessary.BlackThe
electrolyte level of the 12-volt vehicle battery is correct.
Charging, replacing, disconnecting and connecting the 12-volt
vehicle battery
First read and observe the introductoryinformation and safety warnings⇒
Introduction
If you suspect that the 12-volt vehicle battery is damaged or faulty, go to a qualified workshop and
have the 12-volt vehicle battery checked.
Charging the 12-volt vehicle battery
The 12-volt vehicle battery should be charged by a qualified workshop, as the technology used in
factory-fitted 12-volt vehicle batteries requires voltage-limited charging ⇒. Volkswagen
recommends using a Volkswagen dealership for this purpose.
Replacing the 12-volt vehicle battery
The 12-volt vehicle battery has been developed to suit the conditions of its location and has special
safety features. If a 12-volt vehicle battery has to be replaced, discuss the electromagnetic
compatibility, size and necessary maintenance, performance and safety requirements for the new
12-volt vehicle battery with a Volkswagen dealership before purchase.
Only maintenance-free 12-volt vehicle batteries compliant with the standards TL 825 06 and
VW 7 50 73 should be used. These standards must be dated July 2012 or later.
In vehicles with a start/stop system or vehicles with an auxiliary heater ⇒ Auxiliary heater and 
ventilation, always have the 12-volt vehicle battery replaced by a qualified workshop, as the vehicle
electronics must be adapted as part of the replacement process. Only qualified workshops have the
technology required to carry out this adjustment correctly. Volkswagen recommends using a
Volkswagen dealership for this purpose.
Disconnecting the 12-volt vehicle battery
Please note the following if the 12-volt vehicle battery has to be disconnected from the electrical
system in the vehicle:
Any work on the 12-volt vehicle battery can cause serious chemical burns, explosions and
electric shocks.
•Always wear eye protection and protective gloves.
•Electrolyte is very aggressive. It can burn the skin and can cause blindness. When
working with the 12-volt vehicle battery, ensure that your hands, arms and face in
particular are protected from acid spillages.
•Never tilt the 12-volt vehicle battery. Electrolyte may spill out of the battery vents and
cause chemical burns.
•Never open a 12-volt vehicle battery.
•If acid is spilt in your eye or on your skin, rinse immediately for several minutes with
cold water. Then consult a doctor immediately.
•If acid is swallowed, consult a doctor immediately.
WARNING