Why do 172 cups have seat belt tensioners

[sonny172cup]

If they dont have side airbags then why do the seats have them, also why do the rear seat belt tensioners have them??

I stripped my car today and had warning lights (service and airbag) put rear seat belts tentioners back in and the lights went out.

Did a search on here, and a lot of good info came back however Im still confused as to why these cars have them (Its a 2002 early model)

Or is it just a French thing? :approve:

 

[Bluebeard]

A tentioner pulls the belt back in an accident. To stop you sliding under the belt.

It has nothing to do with airbags.

 

[JackJack]

A tensioner pulls the belt back in an accident. To stop you sliding under the belt.

This, normally operate at the same time as airbags though as they are all part of the srs.

 

[sonny172cup]

Hmm well thats what I thought. So why did it trigger the airbag light when I took the tensioner out (unplugged wire).

 

[stephen chadwick]

pulls the belt tight to stop you going anywhere, once triggered they have to be replaced.

 

[Bluebeard]

Because its all on the same circuit.

If you remove something, it will trigger the warning light.

 

[sonny172cup]

Ah I see...cheers guys

Will be popping to Maplins tomorrow to fit resistors.

 

[sonny172cup]

Read up about these last night in the Haynes Manual. Interesting read. Did not realise they had gas pistons in that trigger when the car makes a sudden halt (i.e crash). Hence why they need replacing. Clever things these Clios. Funnily I have never heard of them in other cars, only modern cars with motorised seatbelt tensioners.

 

[Owen92]

Most cars have seat belt pretensioners. Personally I wouldn't remove them because they could save your life. And on another note if you do work on these disconnect the battery and leave for 10minutes before you start work on the system

 

[sonny172cup]

Most cars have seat belt pretensioners. Personally I wouldn't remove them because they could save your life. And on another note if you do work on these disconnect the battery and leave for 10minutes before you start work on the system

I know this now after reading the manual (after removing them) lol

Its a track car so no need for them, but agree, you would have to be a idiot to remove them for a normal road car...well learn something new everyday!

 

[DAR]

I bought my 172 Cup as a partially completed project. It had no back seats in. I can see the front seat looms, and have inserted resistors, however light remains on. I went looking - Very briefly, didn't find any loom.

Can you confirm that the rear seat belts in the 172 Cup had pre-tensioners?

If so are there 2 or 3 on the rear seat?

 

[sonny172cup]

There are two in the back seat reals. Think its a black an blue wire with a white terminal block. I will take pic when i get home.

 

[DAR]

There are two in the back seat reals. Think its a black an blue wire with a white terminal block. I will take pic when i get home.

that would fantastic, thank you.

 

[Cup_Phil]

Read up about these last night in the Haynes Manual. Interesting read. Did not realise they had gas pistons in that trigger when the car makes a sudden halt (i.e crash). Hence why they need replacing. Clever things these Clios. Funnily I have never heard of them in other cars, only modern cars with motorised seatbelt tensioners.

Ermm they're fitted on just about every single car since the 90's

 

[sonny172cup]

Ermm they're fitted on just about every single car since the 90's

Yep it appears so and I never knew this. I though it was associated with side air bags. The wires coming out of the pre-tensioners threw me.

 

[st3ve]

I believe not all cups have pretensioners in the rear afaik.