battery replacement VOLKSWAGEN TIGUAN 2015 Owner´s Manual

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 ⇒ fig. 22 or the power locking buttons ⇒  Unlocking or 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 rear hatch is opened in this span of time, the vehicle is automatically locked afterwards.
Mechanical key

Fig. 23 Mechanical key.