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
⇒
page 42,
Unlocking or locking the vehicle 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 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.
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
Operating the CSC roof when the engine is switched off.
x
The selector lever is left for a long period of time in any position other than
P
when the ignition is
switched off,
Starting and stopping the engine
.
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.
WARNING
When the vehicle battery is charged, it produces highly explosive hydrogen gas.
x
Charge vehicle batteries only in well-ventilated areas.
x
Never charge a frozen or thawed battery. A dead battery can freeze at temperatures
32 °F (0 °C).
x
You must replace the vehicle battery if it was frozen.
x
Incorrectly connected cables can cause a short-circuit. First connect the positive cable (+)
and then the negative cable (-).
NOTICE
x
Never disconnect the vehicle battery or connect 2 vehicle batteries to each other when the
ignition is switched on or the engine is running. Doing this may damage the electrical system
or electronic components.
