Unlock the Car With a Dead Key Fob

If the remote for your Suzuki SX4 S-Cross (JY, 2013–2021) stops locking or unlocking the doors — usually a dead fob battery — you can still get in. Every S-Cross remote has a mechanical key hidden inside it, and the driver’s door has a real lock to use it.

How to Unlock the Car

1. Take the mechanical key out of the remote — pull it free from the fob (there’s a small release).
2. Go to the driver’s door lock. If the lock is hidden under a small cover on the handle, pop the cover off first.
3. Insert the key and turn the top of the key toward the front of the car to unlock all the doors (turning it toward the rear locks them).
4. Open the door and get in. The same key in the driver’s door also locks and unlocks the tailgate.

Now Start It

On a keyless (push-button start) S-Cross, a dead fob won’t start the car the normal way either — but there’s a backup: see our start with a dead key fob guide. The permanent fix is a fresh fob cell (a CR2032) — see replace the key-fob battery.

Frequently Asked Questions

Where is the mechanical key on an S-Cross?

Inside the remote itself. Slide the release and pull the metal key blade out of the fob.

My key won’t turn in the door — which way unlocks it?

Turn the top of the key toward the front of the car to unlock, toward the rear to lock. If there’s a cap over the lock on the handle, remove it first.

The doors unlocked but the car won’t start — why?

The push-start system still needs to detect the fob. Use the dead-fob start method (touching the fob to the start switch), then replace the fob battery.

Is this how thieves get in?

No — this only works with your own registered key, and the immobiliser still blocks a start without the matching fob. It’s simply the factory backup for a dead remote.

If a warning light is showing as well, look it up on autodtcs.com.