Mazda locking me out!

Faults and Technical chat for the Mazda CX-3
Thaxted
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Joined: Tue Aug 13, 2019 2:44 pm
Location: Northern Ireland

Post by Thaxted »

Hi all, twice in the past two weeks I have unlocked my car using the door button, opened the back door and set my bag containing my keys on the back seat (as I have done since I bought the car), closed the back door and..........the car has locked itself - with the keys and my phone inside. Nightmare! Even my house keys were in the car.
Fortunately both times a friend has been near and they have driven me home so that I could collect the spare key to unlock the car again. What is going on? I thought that the car was supposed to be unable to lock when the keys have been inside?
CX-3 Sport Nav, 2018 Soul Red, manual petrol.

Deleted User 1027

Post by Deleted User 1027 »

A possibility is that the battery in the key fob is getting weaker and is not being picked up due to the distance of the receiver and therefore dosen't think the keys are in the car.
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jtonline
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Post by jtonline »

There is a note in the Owner's Manual that the car may lock if the key is in an area of the car where it's not detected or with a mobile phone. Its operational range will also be reduced as the fob battery charge depleats over time.

doorsmaylock.jpg

Julian.
Sept. 2015 CX-3 Sport Nav, Dynamic Blue Mica, 1.5 Diesel, AWD, Automatic
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Thaxted
Posts: 7
Joined: Tue Aug 13, 2019 2:44 pm
Location: Northern Ireland

Post by Thaxted »

Thank you all. I thought it might be battery related. Can I replace the battery myself or do I need to go to a Mazda dealership?
CX-3 Sport Nav, 2018 Soul Red, manual petrol.
santa
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Joined: Mon Oct 26, 2015 5:54 pm
Location: Denmark

Post by santa »

Thaxted wrote: Sun May 09, 2021 5:13 pm Thank you all. I thought it might be battery related. Can I replace the battery myself or do I need to go to a Mazda dealership?
You can do it yourself and it's very easy.
Just look in the manual, it has very good how-to.
Mazda CX-30 2.0 150HP Aut. Cosmo w. Tech Pack in Arctic White, 2023.
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jtonline
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Post by jtonline »

As santa says, and there are videos on YouTube if that helps, e.g.
A main dealer would probably want an arm and a leg to do it for you.
A twin pack of big name lithium CR2025 batteries is easily obtainable for a couple of pounds.
Julian.
Sept. 2015 CX-3 Sport Nav, Dynamic Blue Mica, 1.5 Diesel, AWD, Automatic
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st3v3cx-3
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Joined: Tue May 03, 2016 7:56 pm
Location: South East UK

Post by st3v3cx-3 »

A main dealer wanted to charge me £19 when my car was in for an annual service 2 years ago :evil: I declined. I bought the battery and spent no more than 5 minutes changing it myself for less than a couple of £ even if I costed my time :lol: If I ran a dealership I'd replace them for free as part of a service and absorb the cost for better customer relations etc. Don't think it would make me go bust :lol:
Sport Nav Petrol Automatic FWD Arctic White plus options April 2016
Dogfuzz
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Post by Dogfuzz »

OK-just how long DO Mazda key fob batteries actually last?
I only comment as such since I just happened to be in a Timpsons a few weeks ago and mentioned I was suspicious of my key fob battery and they did it on the spot for a quid or three--next time I'll do my own.
CX-3 SPORT NAV ,5 DOOR HATCHBACK,1998CC,PETROL-2018
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jtonline
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Post by jtonline »

Dogfuzz wrote: Tue May 11, 2021 3:33 pm OK-just how long DO Mazda key fob batteries actually last?..
Usually around 12 months.
Julian.
Sept. 2015 CX-3 Sport Nav, Dynamic Blue Mica, 1.5 Diesel, AWD, Automatic
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Strangways
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Post by Strangways »

jtonline wrote: Tue May 11, 2021 4:22 pm
Dogfuzz wrote: Tue May 11, 2021 3:33 pm OK-just how long DO Mazda key fob batteries actually last?..
Usually around 12 months.
I think it depends on how much you use it. Mine isn't an everyday car as I have the MX5, so I change mine every two years which hasn't caused me a problem as yet.
2019 CX-3 2.0 Sport Nav+ Automatic in ETERNAL BLUE
2015 MX-5 2.0 Sport Nav Manual in SOUL RED
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