Check the battery as follows:
Battery exterior
Make sure that the battery terminals are not corroded and that there are no loose connections, cracks, or loose clamps.

Brake fluid
Before rechargingOpening the back door from outside the vehicle
Back door opener
Vehicles without a power
back door
Raise the back door while
pressing up the back door
opener switch.
Vehicles with a power back
door
When the back door is
unlocked: press the back door
opener switch.
When the back door is locked (vehicles with a smart key s ...