Key backup?
To unlock a 2002 Mercedes SL 500 with a dead battery, you can use the mechanical key hidden within the key fob. First, remove the key by pressing the release button on the fob. Then, locate the small keyhole on the driver's side door handle and insert the mechanical key to unlock the door manually. Once inside, you can access the battery to jump-start or replace it.
If the battery goes dead flat the door will still unlock manually with the key.
Use the key to unlock it. The key is manually activated. Only the keyless entries will not work when the battery is dead.
Your battery is about dead .
Put the key in the door and turn.
By taking your key and sticking it into the lock near the hatch an turning.
Use jump leads from another vehicle or charge your battery on the car
with a brick
use key to manually unlock. manual unlock will not work.
If you can not unlock them with a key, you will have to call a locksmith.
Insert the key into the lock and turn it.
By inserting the key in the door lock and turning.