Author Topic: Dead as a dodo  (Read 868 times)

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Offline 9swampy

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Dead as a dodo
« on: February 10, 2018, 04:02:45 PM »
Dead battery at 2 and a half years; never had one go that quickly before. The AA's on the way; totally forgot I had Mazda breakdown assistance too.

Googling I find some anecdotes saying the battery was covered by the 3 year warranty but lots saying it isn't too. Anyone got a definitive answer one way or the other for my 2015 3?

Offline StevenRB45

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Re: Dead as a dodo
« Reply #1 on: February 10, 2018, 04:54:43 PM »
Looking at Mazdas own bumf if you buy a battery from them as a replacement part it has a 36k mile or 3 year warranty...it would be very odd indeed if the oem one didn't have the same warranty.

Seems to have died very prematurely..have you checked you don't have any drain on It?

Offline zoomzoomer

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Re: Dead as a dodo
« Reply #2 on: February 10, 2018, 08:04:53 PM »
Yes I would of thought a brand new car would carry a 3 year  battery warranty. Have you contacted your Mazda dealership?

Offline moozmooz

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Re: Dead as a dodo
« Reply #3 on: February 11, 2018, 03:39:12 PM »
When you say dead, do you mean dead as in kaput, or flat, as in needing charging?

Offline 9swampy

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Re: Dead as a dodo
« Reply #4 on: August 16, 2018, 06:49:33 PM »
Sorry took me til now to get back.

Dead as in dead. Could charge but it didn't hold squat. Mazda replaced it under warranty, no quibbles. Couldn't find any draining faults or explanations and it's been fine again since. Got an AA Car Genie since and it's reporting all good so far...

Offline StevenRB45

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Re: Dead as a dodo
« Reply #5 on: August 16, 2018, 08:57:35 PM »
Sorry took me til now to get back.

Dead as in dead. Could charge but it didn't hold squat. Mazda replaced it under warranty, no quibbles. Couldn't find any draining faults or explanations and it's been fine again since. Got an AA Car Genie since and it's reporting all good so far...

I have a car genie now as well, got it free cos I work for them lol.

Offline Engineer Andy

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Re: Dead as a dodo
« Reply #6 on: August 19, 2018, 12:55:51 PM »
Looking at Mazdas own bumf if you buy a battery from them as a replacement part it has a 36k mile or 3 year warranty...it would be very odd indeed if the oem one didn't have the same warranty.

Seems to have died very prematurely..have you checked you don't have any drain on It?

I suspect the warranty is conditional on the car being used regularly for reasonable length driving so the battery gets topped back up to 100%.  Note that even if there are no electrical faults (e.g. boot light or similar) drawing current when they shouldn't, the alarm/immobiliser, clock and the ECU must all draw some current whilst the car is switched off to work/keep information in memory to be used the next time the car is used.

When I've been out of work (as I am now [mulling over a career change]), I don't need to use my car much (i.e. no weekday commuting) and found in previous years this lead to the car's battery failing only after 4 years or so.  By experimentation, I found that I needed to use it on a reasonable run (12-13 miles each way to the nearby town for shopping on a dual carriageway) once every 3 weeks in the summer, every 2 weeks in cooler spring/autumn and once a week in winter.  That works out at roughly 650 miles and about £100 of fuel more per year.  I think my battery would probably not make it to 3 years had I not used it at all - I don't know if that would be covered by its warranty if I barely used the car and let it go flat far quicker.

The extra expense of driving it 650 more miles pa (£400 over 4 years compared to a replacement battery every 2 at £150) £100 more, would be less of an issue than a flat battery and having to call out the RAC or a neighbour to recharge the battery (and again on the way back) for an important journey, e.g. going on holiday or to a family event.  Using the car a bit more often also keeps the mechanicals in better nick, especially the brakes which have a bad habit of binding if the car sits around for long, especially in cooler, damp conditions.  Repairing/replacing those would cost a lot and easily justify the extra fuel.

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Re: Dead as a dodo
« Reply #6 on: August 19, 2018, 12:55:51 PM »