key battery VOLKSWAGEN PASSAT 2012 Owners Manual

Replacement vehicle keys
The vehicle identification number is required to get a replacement key or an additional remote control vehicle key.
Up to 8 vehicle keys, each of which must be properly cut, coded, programmed, and synchronized, can be used with your vehicle.
Each new vehicle key contains a microchip and must be coded with the data from the vehicle's electronic immobilizer. A vehicle key will not work if it does not contain a microchip or contains a chip that is not coded, even if the key bit was cut correctly.
You can obtain additional or duplicate remote control vehicle keys from authorized Volkswagen dealers, authorized Volkswagen Service Facilities, and from certain independent repair facilities and locksmiths which are qualified to make remote control vehicle keys.
Each vehicle key must be programmed by an authorized Volkswagen dealer, an authorized Volkswagen Service Facility in order for it to work with your vehicle.
To find the nearest qualified independent repair facility, locksmith, or Volkswagen dealer which can cut and code replacement vehicle keys, call the VW Customer Care Hotline at 1-800-822-8987 or visit http://www.vw.com and search for “replacement keys.”
Canadian customers can contact an authorized Volkswagen dealer or Volkswagen Service Facility or call the Volkswagen Canada Customer CARE Center at (1-800-822-8987).
NOTICE
The remote control vehicle keys contain electrical components. Protect them from damage, moisture and rough handling.
Do not press the buttons on the remote control vehicle key unless you actually want to use the function in question. Since terrain and conditions vary, pressing a button on the remote control vehicle key when it is not necessary may unlock the vehicle or set off the panic alarm, even if you think you are out of range.
Remote control vehicle key functions can be temporarily disrupted by interference from transmitters near the vehicle that use the same frequency range (such as radio equipment or mobile phones).
Things between the remote control vehicle key and vehicle, bad weather, as well as a weak battery can reduce the operating range.
If the remote control vehicle key buttons, Vehicle key set or the power locking buttons, Unlocking and locking the vehicle from the inside are pushed repeatedly in quick succession, the power locking system is switched off for a brief period to help keep it from being overloaded. The vehicle is then unlocked for about 30 seconds. Unless a door or the luggage compartment lid is opened in this span of time, the vehicle is automatically locked afterwards.

Volkswagen recommends having the battery in the remote control vehicle key changed by an authorized Volkswagen dealer or authorized Volkswagen Service Facility.
The battery is on the back of the remote control vehicle key under a cover ⇒ fig. 30.
When changing the battery, pay attention to the correct polarity and use the same type of battery
⇒ .
Replacing the battery
x Unfold the key bit on the remote control vehicle key, Remote control vehicle keys, Remote control vehicle keys, Remote control vehicle keys.
x Remove the cover on the back of the remote control vehicle key in the direction of the arrow ⇒ .
x Use a thin object to pry the battery out of the battery compartment ⇒ fig. 31.
x Position the new battery in as shown and press it into the battery compartment (opposite to
direction of the arrow) ⇒ .
x Position the cover as shown ⇒ fig. 30 and press it down (opposite to direction of the arrow) until you hear it click into place.
NOTICE
x Changing the battery improperly can damage the remote control vehicle key.
x Using the wrong battery can damage the remote control vehicle key. Replace a dead battery with a new one that has the same voltage, size, and specifications.
x Make sure the plus and minus poles of the battery are correctly positioned.
Dispose of old batteries in an environmentally responsible manner and keep them out of the reach of children.
Batteries of the type used in your remote control vehicle key may contain Perchlorate Material. Special handling may apply – see http://www.dtsc.ca.gov/hazardouswaste/perchlorate. Obey all legal requirements regarding handling and disposal of these batteries. Authorized Volkswagen dealers and authorized Volkswagen Service Facilities are familiar with the requirements, and we recommend that you have them perform this service for you.
Synchronizing the remote control vehicle key

Preparation for the anti-theft alarm system
If the vehicle is pre-equipped for installation of the anti-theft alarm system, the alarm system can be retrofitted by an authorized Volkswagen dealer or an authorized Volkswagen Service Facility.
The anti-theft alarm system makes it more difficult for someone to break into or steal the vehicle.
The anti-theft alarm system is automatically activated when the vehicle is locked by pressing the lock button on the remote control vehicle key.
When is the alarm triggered?
The anti-theft alarm system sounds for about 30 seconds and the turn signals flash for up to 5 minutes if the following occurs with respect to the locked vehicle:
x Opening a door that has been mechanically unlocked without switching on the ignition within about 15 seconds.
x Forcibly opening a door.
x Forcibly opening the engine hood.
x Forcibly opening the luggage compartment lid.
x Switching on the ignition with an invalid key.
x Disconnecting the vehicle battery.
Deactivating the alarm
Unlock the vehicle with the unlock button on the remote control vehicle key and switch on the ignition with a valid vehicle key.
For vehicles with Keyless Access, the alarm can be deactivated by grasping one of the door handles when a valid remote control vehicle key is in range or by holding the remote control vehicle key to the right of the steering column trim and pressing the starter button, Unlocking and locking vehicles with Keyless Access.
After the alarm has stopped and the vehicle is opened again in the same or a different area that is protected by the alarm, the alarm is triggered again. For example, the alarm will sound again if the luggage compartment lid is opened after one of the doors has been opened.
The anti-theft alarm system is not activated when the vehicle is locked with the power lock switch 1 on the inside of the driver or front passenger doors.
If the driver door is mechanically unlocked using the vehicle key bit, only the driver door is unlocked, but not the entire vehicle. Switching on the ignition deactivates the anti-theft alarm system and activates the central locking button. To unlock the doors, use the central locking button or remote control vehicle key.
If the vehicle battery is dead or weak, the anti-theft alarm system will not work properly.

WARNING
Improper use of electrical seat controls can cause serious personal injuries.
x The front seats in your vehicle can be electrically adjusted even when the vehicle key has been removed from the ignition or, on a vehicle with Keyless Access, even if there is no key in the vehicle.
x Never leave children and persons who need help in the vehicle alone because the unsupervised use of the electric seat adjustments can result in serious personal injury.
x Always make sure that no one is in the way while the front seats are being adjusted, or while calling up the stored memory settings for the front seats. In an emergency, stop automatic seat adjustment by pressing a seat adjustment switch.
NOTICE
To help prevent damage to electrical parts in the seat, do not kneel on the front seats or apply concentrated pressure to a small area of the seat or backrest.
If the vehicle battery is too weak, the electrical seat adjustment controls may not work.
Starting the engine stops seat adjustment.
When entering and exiting the vehicle, be careful not to come into contact with any switches that could change the seat adjustment.
Adjusting front and rear head restraints

Fig. 60 Adjusting the front head restraints.

Recalling settings for driver seat and outside mirrors
x Briefly press the appropriate memory button when the vehicle is not moving, the ignition is switched off, and the driver door is open.
x OR: If the ignition is switched on and the driver door is closed, press and hold the appropriate memory button until the stored position is reached.
x The passenger-side outside mirror automatically adjusts back from the position stored for backing up when the vehicle moves forward at about 10 mph (15 km/h) or more or when the rotary knob is rotated from R into a different position.
Assigning driver seat and outside mirror settings to a vehicle key
The memory function of all vehicle keys is disabled when the vehicle is first delivered from the factory.
To enable vehicle key memory function:
x Unlock the driver door.
x Press and hold a memory button until memory position is reached.
x Press and hold the unlock button 0 on the vehicle key and then press the desired memory button at the same time within about 3 seconds. A chime sounds to confirm activation.
To disable vehicle key memory function:
x Press and hold the SET button.
x Press and hold the unlock button 0 on the vehicle key and the desired memory button at the same time within about 10 seconds. A chime sounds to confirm deactivation.
Assigning settings to an additional vehicle key
x Follow the instructions, Assigning driver seat and outside mirror settings to a vehicle key to assign the driver seat and outside mirror settings to the vehicle key.
x Unlock the vehicle with the same vehicle key.
x Adjust driver seat and outside mirrors.
x Lock the vehicle with locking button 1 in the vehicle key to store the settings.
Once the settings are stored, the driver seat and the outside mirrors move to the stored positions whenever the vehicle is unlocked with the vehicle key open button 0 and the driver door is opened. If two people use the vehicle, each of them should always use the key in which his or her personal settings have been stored.
Initializing the memory seats
The memory system must be initialized by an authorized Volkswagen dealer, an authorized Volkswagen Service Facility, or another qualified workshop in certain situations, for instance, if a new driver seat is installed.
Initializing clears all memories and assignments of the memory seat. After that, memory buttons can be reprogrammed and assigned to a vehicle key.
x Open the driver door but do not enter the vehicle.
x Adjust the seats from the outside.
x Move the angle of the backrest forward as far as it will go.
x Release the backrest adjustment switch and press it again until you hear a chime sound.
Cancellation conditions when storing settings for the memory buttons
When one of the following conditions is met, the storing process will be cancelled:
x The vehicle battery is weak or dead.
x The SET button is pressed again within about 10 seconds.
x The seat position is readjusted within about 10 seconds after pressing the SET button.

WARNING
Improper use of vehicle keys can result in serious personal injury.
x Always take the key with you when you leave the vehicle. The engine can be started and vehicle systems such as the power windows can be operated, leading to serious personal injury.
x Never leave children, disabled persons, or anyone who cannot help themselves in the vehicle. The doors can be locked with the remote control vehicle key. This could result in people being trapped in the vehicle in an emergency. For example, depending on the time of year, people trapped in the vehicle can be exposed to very high or very low temperatures.
x Heat build-up in the passenger and luggage compartment of a parked vehicle can result in temperatures in the vehicle that are much higher than the outside temperatures, particularly in summer. Temperatures can quickly reach levels that can cause unconsciousness and death, particularly to small children.
x Never remove the key from the ignition switch while the vehicle is moving or rolling to a stop. The steering wheel will lock and you will not be able to steer or control the vehicle.
Leaving the key in the ignition for a long time when the engine is not running will drain the vehicle battery.
Leaving the selector lever for a long period of time in any position other than Park (P) when the ignition is switched off can drain the vehicle battery.
On automatic transmission vehicles, the vehicle key can be removed from the ignition switch only when the transmission is in Park (P). You may have to press the release button on the transmission selector lever to put the lever into Park (P).
Starter button

Fig. 148 In the center console: Starter button of the Keyless Access locking and starting system.

2. Press the V button twice in a row (2).
The turn signals will blink each time you press a button. The parking lights come on during the remote start, Lights.
Ending the remote start
Press button (2), (3), or (4) in the vehicle key to switch the engine off.
Automatic stop or remote start not possible
If one of the following conditions occurs, the remote start feature will stop, the engine will be switched off automatically, or the engine will not start:
x The vehicle is unlocked, Power locking and closing system.
x The engine hood or luggage compartment lid is opened, Power locking and closing system.
x The selector lever is in not in Park (P), Shifting.
x A vehicle key is in the ignition.
x The brake pedal or accelerator pedal is depressed.
x The fuel level drops down to “Reserve” while the engine is running in the remote start mode, Refueling.
x The vehicle battery is too weak or is dead, Vehicle battery.
x The warning flasher switch is pressed, In an emergency.
x The engine Malfunction Indicator Light (MIL), Indicator lights, Indicator lights was on when the vehicle was last parked before activating the remote start mode.
Driving after a remote start
You cannot drive the vehicle if the engine was started with the remote start feature or if the engine is running in remote start mode. To be able to drive, you must first switch the remote started engine off with the vehicle key or the starter button and then start it again with the vehicle key in the ignition lock or with the starter button.

WARNING
High voltage systems in the engine compartment can cause electrical shocks or even electrocution, severe burns, other serious injuries, and even death!
x Never short-circuit the electrical system. Be especially careful when using jumper cables. The vehicle's battery could explode!
x To reduce the risk of electrical shock and personal injury while the engine is running or being started:
– Never touch ignition cables. Never touch other components of the high voltage electronic ignition system.
– Never touch the wiring of the HID – High Intensity Discharge (Xenon) headlights.
x Read and heed the important information and warnings on cleaning the engine compartment
WARNING
Moving parts in the engine compartment can cause serious personal injury on contact.
x Never reach into the area around or touch the radiator fan. Contact with the blades can cause serious personal injury. Always remember that the radiator fan is temperature-controlled and can come on suddenly even when the engine has been switched off for a while and the key has been removed from the ignition.
x If you have to perform a check or repair when the engine is running, there are more risks from the rotating parts, such as the drive belts, alternator, radiator fan, etc., and from the high-voltage ignition system. Always use extreme care.
– Always make sure that jewelry, loose clothing and long hair do not get caught in rotating engine parts. Before starting any work remove your jewelry, take off your necktie, tie back and cover your hair, and do not wear clothing that can hang down and get caught in moving engine parts.
– Always use extreme caution if the accelerator pedal has to be depressed to perform a check. The vehicle will start to move even if the parking brake is on.
x Never leave any objects in the engine compartment, for example cleaning rags and tools. Objects left behind can cause malfunctions, engine damage, and even fires.
WARNING
Operating fluids and some materials in the engine compartment can catch fire easily, causing burns and other serious personal injuries!
x Do not smoke.
x Never work next to open flames or sparks.
x Never pour or spill operating fluids or other flammable liquids on the engine. These fluids can ignite on hot engine parts and cause injuries.
x If work on the fuel system or the electrical system is necessary:
– Always disconnect the 12 Volt vehicle battery. Make sure the vehicle is unlocked when you disconnect the battery, or the alarm will go off. Never touch the electrical wiring of the ignition system.
– Never work near heaters, water heaters, or other open flames.
x Always have a functional, approved fire extinguisher nearby.

x First disconnect the negative cable (-) and then the positive cable (+) ⇒ .
Connecting the vehicle battery
x Prior to reconnecting the battery, switch off all electrical systems and devices and the ignition.
x Connect the positive cable (+) first and then the negative cable (-) ⇒ .
After the battery is connected and the ignition is switched on, different indicator lights may come on. They should go out after you drive a short distance at 10–12 mph (15–20 km/h). If the indicator lights do not go out , contact an authorized Volkswagen dealer or an authorized Volkswagen Service Facility and have the vehicle checked.
If the battery was disconnected for a long time, the next scheduled service may not be correctly
calculated and displayed ,Instrument cluster The maximum permissible service and maintenance
intervals are shown in the ⇒ booklet Warranty and Maintenance.
Vehicles with Keyless Access
If the ignition will not start after reconnecting the vehicle battery, lock the vehicle from the outside and unlock it again, Unlocking and locking vehicles with Keyless Access. Then try to start the ignition again. If the ignition cannot be switched on, contact an authorized Volkswagen dealer, an authorized Volkswagen Service Facility, or another qualified workshop for assistance.
Automatic electrical load deactivation
If the vehicle battery drain is high, the intelligent onboard electrical system management automatically takes steps to help prevent battery drain.
x The idle speed is increased so that the alternator provides more power.
x The power to devices that consume a lot of electricity is cut back or switched off completely.
x When the engine is started, the power supply to the 12 Volt sockets and the cigarette lighter, Cigarette lighter is temporarily interrupted.
The onboard electrical system management cannot always keep the battery from being drained. For example, the battery will drain if the engine is not running, but the ignition is switched on or the parking lights are left on for a long time when parked.
Battery disconnection in an accident with airbag deployment
In vehicles with a battery in the luggage compartment, the electrical connection to the battery is disconnected automatically in a collision with airbag deployment. This helps to prevent a short-circuit.
What drains the vehicle battery?
x Long periods when the engine is not running, especially when the ignition is on.
x Using electrical systems or devices when the engine is switched off.
x Leaving the vehicle unlocked for several days when not in use.
x The selector lever is left for a long period of time in any position other than P when the ignition is switched off, Automatic transmission: Selector lever.
WARNING
Failure to use the proper battery with proper mounting and connections may cause short circuits, fires, and serious personal injuries.
x Always use only maintenance-free or cycle-free, leak-proof batteries with the same specifications and dimensions as the original equipment battery. Specifications are listed on the battery housing.

341
Frequently asked questions
If you suspect a malfunction or vehicle damage, read and follow the following advice before contacting an authorized Volkswagen dealer or an authorized Volkswagen Service Facility. You may also find helpful information under “Characteristics” and “Checklist” in the index.

Description Possible causes, among others Possible remedy
Engine does not start.
Vehicle battery dead. – Perform jump-start– Charge vehicle battery
The wrong vehicle key is used. Use a valid vehicle key
Fuel level too low. Refuel
AdBlue fill level too low. Refill AdBlue
Vehicle cannot be locked or unlocked using vehicle key.
– Battery in the remote control vehicle key dead. – Too far away from vehicle (out of range). – Buttons have been pressed too many times.
– Replace the battery in the remote control vehicle key – Move closer to vehicle. – Synchronize vehicle key. – Lock or unlock vehicle manually
Unusual noises. Cold engine, braking assist systems, electronic steering column lock. Check the “Noises” entry in the index.
Odd driving behavior.
Assistance systems activated. Check the “Assistance systems” entry in the index.
DSG® Direct Shift Gearbox too hot. Stop vehicle as soon as you can do so safely
Outside mirrors move when vehicle is unlocked. Convenience settings are stored. Correct convenience settings
Front seats cannot be adjusted with power controls.
Vehicle battery dead. Charge vehicle battery
Fuse blown. Check fuse and replace if necessary
Features do not work as described in this manual.
Settings were adjusted in the Volkswagen Information System.
Check and reset to factory settings if necessary
Headlights do not light up the road as they should.
– Headlights adjusted too high.– Light bulbs burned out. – Low beams not switched on.
– Have the headlight range adjusted by an authorized Volkswagen dealer or an authorized Volkswagen Service Facility. – Change light bulbs – Switch on low beams
Electrical consumers do not work.
Vehicle battery charge too low. Charge vehicle battery
Remaining fuel level too low. Refuel
Fuse blown. Check fuse and replace if necessary
Fuel consumption higher than indicated.
– Short hauls. – “Jumpy” accelerator pedal.
– Avoid short distance driving. – Drive defensively. – Accelerate smoothly.
Electrical loads switched on. Switch off unnecessary loads.