Driver side seat belt Tensioner

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Aido 8
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Driver side seat belt Tensioner

Post by Aido 8 »

Hi guys, Im a little unsure on this on what to replace.

My car was with Mazda for the recalls so I asked them why I had this light on the dash, (pic of something similar below).

They told me it was for the drivers side seat belt tensioner so my question is what do I replace.

The seat belt itself?? as it does not wind up that well anyways, or the little box under the stereo??

The light flashes sometimes but mostly stays on all the time.
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Re: Driver side seat belt Tensioner

Post by Bigblueknight3k »

I think i believe it will be the seat belt

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Aido 8 (Wed Jul 10, 2019 11:19 pm)
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Re: Driver side seat belt Tensioner

Post by Bigblueknight3k »

As it has a tension device in it yellow plug

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Re: Driver side seat belt Tensioner

Post by warpc0il »

Follow the Troubleshooting Guide and it should tell you exactly where the problem is. Could be as simple as a plug disturbed while cleaning or being kicked by a passenger.

https://www.rx8ownersclub.co.uk/forum/v ... 58&t=35629
>> Launch MAZDA Service Materials
Switch from Workshop Manual to Troubleshooting
>> RESTRAINTS
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Aido 8 (Wed Jul 10, 2019 11:20 pm)
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Re: Driver side seat belt Tensioner

Post by Aido 8 »

Awesome thanks guys, just one more question, I have 2 from a 04 RX8 but mixed them up and can't tell the passenger side from the driver side or are they the same ??
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Re: Driver side seat belt Tensioner

Post by warpc0il »

Check the part numbers on the labels.
One says "LH" the other "RH"
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Re: Driver side seat belt Tensioner

Post by Aido 8 »

That's why I asked, they read the same, so maybe the same ??
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Re: Driver side seat belt Tensioner

Post by warpc0il »

looks like they're interchangeable
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Re: Driver side seat belt Tensioner

Post by PeteH »

But that's not the tensioner, and there is no sensor in the belt (so nothing to throw a code). The tensioner is the bit the belt buckles into (attached to the seat). As Dave says, it would be worth checking the electrical plugs under the seat.
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Aido 8 (Thu Jul 11, 2019 8:28 am)
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Re: Driver side seat belt Tensioner

Post by Boston Rotary »

Unplug the yellow connector under your seat and then plug it back in, also make sure the white plug is fully home. This normally happens if someone has move the seat all the way back.
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Re: Driver side seat belt Tensioner

Post by Aido 8 »

OK guys only looked at this now. Mazda said they checked the connections under the seat so I just done it again. So pics below to see if wire looking OK but if its nothing to do with the seat belt what about the buckle it clicks into ??
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Re: Driver side seat belt Tensioner

Post by qwakers »

yellow one is airbag white is pretensioner, seatbelt light/alarm and seat electrics.
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Re: Driver side seat belt Tensioner

Post by Aido 8 »

Yeah but still light on in the dash, where now :roll:
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Re: Driver side seat belt Tensioner

Post by warpc0il »

The dash light should flash a code, which the Diagnostics will tell you exactly which connection/component has the problem.

The system is very sensitive to resistance, so the connection might need to be disconnected, cleaned and reconnected, sometimes more than once, before it is happy.
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Re: Driver side seat belt Tensioner

Post by Aido 8 »

My code reader is not picking up a code from it.The light flashes when ignition is turned on then goes of for a few seconds and then stays on solid. I have cleaned and refitted yellow and white wires several times now and no joy.

It was Mazda that told me that it was the seat belt tensioner. They said they tried the wires under the seat but it would need more tests as they did not know what the problem was. Anyway I was just talking to a guy that has garage diagnostic tool so we will see what it might say tomorrow. :|
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Re: Driver side seat belt Tensioner

Post by qwakers »

a elm327 and a copy (free) of forscan will be able to read the code.
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Re: Driver side seat belt Tensioner

Post by warpc0il »

The pattern of flashing lights is the code

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Re: Driver side seat belt Tensioner

Post by Aido 8 »

OK the codes, since it is electrical probably beyond me.
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