Mazda CX-3: Keys / Keyless Entry System
This system uses the key buttons to remotely lock and unlock the doors and the liftgate.
The system can start the engine without having to take the key out of your purse or pocket.
It can also help you signal for attention or help.
Operating the theft-deterrent system is also possible on theft-deterrent system-equipped vehicles.
System malfunctions or warnings are indicated by the following warning lights or beeps.
- KEY Warning Light (Red)
Refer to Contact Authorized Mazda
Dealer and Have Vehicle Inspected.
Refer to Taking Action.
- Ignition Not Switched Off (STOP)
Warning Beep
Refer to Ignition Not Switched Off (STOP) Warning Beep.
- Key Removed from Vehicle Warning
Beep
Refer to Key Removed from Vehicle Warning Beep.
If you have a problem with the key, consult an Authorized Mazda Dealer.
If your key is lost or stolen, consult an Authorized Mazda Dealer as soon as possible for a replacement and to make the lost or stolen key inoperative.
NOTE
- The keyless entry system operation may vary due to local conditions.
- The keyless entry system is fully operational (door/liftgate lock/unlock) when the ignition is switched off. The system does not operate if the ignition is switched to any position other than off.
- If the key does not operate when pressing a button or the operational range becomes too small, the battery may be weak. To install a new battery, refer to Key Battery Replacement.
- Battery life is about 1 year. Replace the battery with a new one if the KEY indicator light (green) flashes in the instrument cluster. Replacing the battery about once a year is recommended because the KEY warning light/ indicator light may not illuminate or flash depending on the rate of battery depletion.
- Additional keys can be obtained at an Authorized Mazda Dealer. Up to 6 keys can be used with the keyless functions per vehicle. Bring all keys to the Authorized Mazda Dealer when additional keys are required.
KEYS
WARNING
Do not leave the key in your vehicle with
children and keep them in a place where
your children will not find or play with
them:
Leaving children in a vehicle with the key is
dangerous...
Transmitter
NOTE
The headlights turn on/off by operating
the transmitter. Refer to Leaving Home
Light.
(With theft-deterrent system)The hazard
warning lights flash when
the theft-deterrent system is armed or
turned off...
Other information:
Mazda CX-3 (2015-2025) Owner's Manual: Seat Belt Extender
If your seat belt is not long enough, even when fully extended, a seat belt extender may be available to you at no charge from your Authorized Mazda Dealer. This extender will be only for you and for the particular vehicle and seat. Even if it plugs into other seat belts, it may not hold in the critical moment of a crash...
Mazda CX-3 (2015-2025) Owner's Manual: Battery
WARNING Wash hands after handling the battery and related accessories: Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Read the following precautions carefully before using the battery or inspecting to ensure safe and correct handling: Always wear eye protection when working near the battery: Working without eye protection is dangerous...
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Opening and Closing the Liftgate
Opening the liftgate with Electric liftgate opener
Unlock the doors and liftgate, then press the electric liftgate opener on the liftgate and raise the liftgate when the latch releases.
