Enable proximity auto lock in Mazda Connect, exit with the key, close every opening, wait for the first beep and then walk beyond the detection range.
Check that your vehicle has it.
Verified in the 2025 Mazda3 owner's manual for advanced-keyless-equipped vehicles; applies to sedan or hatchback only when the setting is present.
Does the documented scope match your car?
This check combines the verified year, any source-supported powertrain scope, source-named trim/package and required equipment. It does not read a VIN or factory build record.
Published availability and qualifications
Verified in the 2025 Mazda3 owner's manual for advanced-keyless-equipped vehicles; applies to sedan or hatchback only when the setting is present.
- 2025 U.S. Mazda3 Sedan and Hatchback gasoline models equipped with advanced keyless entry and proximity auto lock
Know what kind of control to look for.
This original category diagram is an orientation aid, not a picture of your exact trim. Use the written labels and your vehicle manual to identify the real control.
Step by step.
- 01
While parked, enable proximity or walk-away auto locking in Mazda Connect Settings.
- 02
Switch vehicle power off and leave the vehicle carrying the registered key.
- 03
Close every door and the liftgate or trunk and listen for the first confirmation beep.
- 04
Walk outside the key operating range and wait for the lock confirmation.
- 05
Verify the Mazda3 is locked before leaving it unattended.
Important limits
- A spare registered key inside the cabin can prevent expected locking.
- Walking out of range before all openings close may interrupt the function.
- Always physically verify lock status rather than relying only on sound.
Quick checks.
- ✓If it does not lock, close all openings again and repeat with no spare key left inside.
- ✓If there is no first beep, verify the Mazda Connect setting and transmitter battery.
- ✓If behavior differs after a settings reset, re-enable the personalization option.
What happened on your vehicle?
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2025 Mazda3 Digital Owner's Manual — Proximity Auto Lock
Relevant section or page: Doors — Convenient Ways to Use the Doors. We use the written official source to determine the steps and applicability shown above.
Reviewed with a visible trail.
Scope and steps were checked by Car Cheat Codes Editorial Review. A guide is narrowed or corrected when the source does not support a broader claim.
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Guide change history
- Initial verified publication.