Airbag light on
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Discussion

paintman

Original Poster:

7,861 posts

221 months

Tuesday 29th January 2019
quotequote all
Bit of an odd one - although it IS French cars & their electricsrolleyes
It is about to go on diagnostics but wonder if anyone has met a similar problem?

Renaultsport Megane RS225 2007 3 door.
In cold weather airbag light goes off after starting but then comes back on & 'Check airbag' on message screen.
In warmer weather comes on with all other lights & goes off as normal.
New fully charged battery fitted to eliminate battery dying in cold weather issues. No change.
In cold weather & light on if parked in the sun for a while the light behaves properly. When parked back in the shade & has got cold (body & interior) the light comes back on when started.
Main connectors under both front seats (common issue on these) cleaned, WD40'd & wiggled. No difference.

Moving to a warmer clime is not an option smile

E-bmw

13,620 posts

183 months

Tuesday 29th January 2019
quotequote all
I am going to guess sun on the passenger seat is the catalyst for the light behaving as it should.

Sounds like your occupancy centre is starting to break down & is likely to need replacing.

Penelope Stopit

11,209 posts

140 months

Tuesday 29th January 2019
quotequote all
As above, seat sensors or perhaps steering ribbon making and breaking. Can you borrow and swap these parts over then test?

paintman

Original Poster:

7,861 posts

221 months

Tuesday 29th January 2019
quotequote all
Thank you.
Waiting for the diagnostic.
Should know what it throws up tomorrow.
I'll keep you informed.

paintman

Original Poster:

7,861 posts

221 months

Wednesday 30th January 2019
quotequote all
The result?

Nothing to do with the front seats.
The light started just after the driver's seat had been moved for a different driver & it had been some time since the seat needed to be operated to let a passenger into the rear - which also moves the seat on its runners.
The connectors are a known problem & it was considered a high probability that they were the issue.

Diagnostic showed stored codes for both front seats - expected as their connectors had been opened & closed several times - and a stored code for an intermittent fault on the rear belts.
Clearing the codes left just the rear one repeating.
Connectors on both rears opened, cleaned, WD40'd & closed.
Light off & no codes.

Shows the value of having a proper diagnostic with a tool specific to the make!

Penelope Stopit

11,209 posts

140 months

Wednesday 30th January 2019
quotequote all
Nice, glad you found it without too much trouble, thanks for updating here....many don't