Have any Roomster owners experienced what appear to be false warning bong/light relating to seatbelts?

Have been chasing down what I assumed to be an intermittent fault with the receiving latch for driver's side front seatbelt. Had the disappointment yesterday of fitting a 'new' latch only to have my partner report that there was one brief instance of the 'bong' warning on the very next journey.

Whilst looking at the wiring diagram this morning, with a view to eliminating the green connector pair under driver's seat, I noticed that there's an asterisked option of passenger front seat belt latch sensing, together with an occupancy sensor - G452 Pressure sensor for seat occupied recognition.

Checked the car and it does have wiring from the belt receiving latch, so it appears to have this option.

Now wondering if the occasional false triggering is actually being caused by bags on passenger seat? No such occupancy sensor on previous cars, so we habitually do put bags there.

Apparently there was a fairly heavy bag there on the trip yesterday evening.

Anyone experienced this?

Thanks for any feedback.

5 hours ago, Breezy_Pete said:

Now wondering if the occasional false triggering is actually being caused by bags on passenger seat?

Anyone experienced this?

Yes - but I cannot remember whether I was in my Scout or my SE. I was helping my niece to move home and had put something heavy on the passenger seat, possibly a microwave. I stopped the bong by fastening the seat belt around the microwave.

That's great, thanks @Robjon .

I experimented on the way home with variously heavy items in various positions on passenger seat. Doesn't take a great deal of weight.

Problem solved, I think. :)

Not a Roomster but SWMBO's MkV Golf would bong if there was something a bit too heavy placed on the seat and the belt not buckled..

I knew a 2012 car was going to be too clever for me! 😆

I was so close to trying to chase a phantom wiring fault from under driver's seat towards the airbag module where these wires go.

That would've driven me more bonkers!

Edited 14 August, 202514 Aug by Breezy_Pete

I'm half tempted to test on my Rapid the weight which sets it off. Maybe something to do at the weekend 🤷‍♂️

A spare Roomster steering knuckle inside a large zip lock bag will do it, especially when near the outside edge of the seat towards the seatback.

A bottle of red wine on the inner edge isn't enough, but if you press down on it it a little, it is. 🤪

Thought of you yesterday, Lee.

Had a team of Openreach wiremen digging a hole in the pavement right outside our house. We don't have a landline any more, but they seemed to find and fix the problem and refill the hole pretty efficiently.

Blamed it on Virgin Media's fibre installers, who'd been very much in the same spot recently.

2 hours ago, Lee01 said:

I'm half tempted to test on my Rapid the weight which sets it off. Maybe something to do at the weekend 🤷‍♂️

Have you that little to be at? 🤣

I had a call from SWMBO a while back re the seatbelt warning on the Kodiaq... It was the same issue of a bag on the passengers seat she'd dumped there in a hurry instead of in the boot.

Until I looked at the wiring diagram this morning I had no clue this car had any such thing.

Bloody modern nonsense.

I actually tried briefly to disable the whole seatbelt warning system with VCDS, but it didn't look as simple as a youtube video seemed to suggest, so I bottled it for fear of knobbing something else up.

I mean, what sort of idiot needs reminding to put their seatbelt on in 2025?

40 minutes ago, mac11irl said:

Have you that little to be at? 🤣

Going by Pete's post a bottle of wine I believe would weighs ~ 1.1Kg so I reckon 1.5 Kg would do it.

A handbag can weigh anything between 1Kg and I reckon 50Kg going by how much crap some contain 😂

13 minutes ago, Breezy_Pete said:

Until I looked at the wiring diagram this morning I had no clue this car had any such thing.

Bloody modern nonsense.

I actually tried briefly to disable the whole seatbelt warning system with VCDS, but it didn't look as simple as a youtube video seemed to suggest, so I bottled it for fear of knobbing something else up.

I mean, what sort of idiot needs reminding to put their seatbelt on in 2025?

When we had a seatbelt warning fault on the Octavia I just unplugged the connector under the seat to no detriment

3 minutes ago, Lee01 said:

bottle of wine I believe would weighs ~ 1.1Kg so I reckon 1.5 Kg

I can honestly say that's the first time I've seen a Nebuchadnezzar of wine being decanted with syphon 😂

1 hour ago, Breezy_Pete said:

I mean, what sort of idiot needs reminding to put their seatbelt on in 2025

Going by the number of time car parks I’ve seen belts clearly permanently clipped in and sat on top of… and a recent spa from from RSA about young lads buying “replacement” seat belt clips online… that then get put into the latch to not need to sit on the belt…

I think quite a few idiots need reminding…

Me? I feel weird not having a belt on driving from one end of a work compound to the other.. (some of them are 1/2 a mile long…) with nothing else other than stones around me..

On 14/08/2025 at 10:40, Breezy_Pete said:

Have any Roomster owners experienced what appear to be false warning bong/light relating to seatbelts?

Have been chasing down what I assumed to be an intermittent fault with the receiving latch for driver's side front seatbelt. Had the disappointment yesterday of fitting a 'new' latch only to have my partner report that there was one brief instance of the 'bong' warning on the very next journey.

Whilst looking at the wiring diagram this morning, with a view to eliminating the green connector pair under driver's seat, I noticed that there's an asterisked option of passenger front seat belt latch sensing, together with an occupancy sensor - G452 Pressure sensor for seat occupied recognition.

Checked the car and it does have wiring from the belt receiving latch, so it appears to have this option.

Now wondering if the occasional false triggering is actually being caused by bags on passenger seat? No such occupancy sensor on previous cars, so we habitually do put bags there.

Apparently there was a fairly heavy bag there on the trip yesterday evening.

Anyone experienced this?

Thanks for any feedback.

Sort of; I knew someone who had to put a seat belt round his Alsatian when he had a Volvo, and when he changed that for a Granada discovered that the dog now wanted to "clunk click every trip". Of course, that may be a comment on his driving?