Yep - I have owned my RRS (L320) since 2010 and at least once per year have asked the question about the door open and the gong when the key is in the ignition. Not found an answer though there is a rewiring option that links into the passenger door wiring so the car thinks you have opened the passenger door so all the lights and dash indications come on (I assume it tells you the passenger door is open) with no gong.

What is interesting with the L320 is that sometimes the gong stops after about 60 secs but I have not been able to work out the scenario where this happens as it seems random - eg gong when door opens with key in ignition or door open then key is put into the ignition - seems all random.

Garry 07MY RRS TDV6
Arctic Frost
Aspen Interior

Simple, just plug the seat belt in with the belt behind the seat In Spain - 2018 F Pace - Frightened away from the Sports due to crank failures
Gone - A couple of RRS, A couple of Disco's. However thinking of another Sport.

Pluging the seat belt in doesn't disable the ignition on door open chime, to disable seat belt chime just plug and unplug belt something like 8 times within 10 seconds, job done.

Cheers
Col

I use one of these. They're plastic and came from QD store in Aylesbury a few years ago, £1 for a 2 pack if I remember correctly. 2016 L494 SDV8 AB
2014 Nissan Leaf Tekna
1989 Toyota MR2 MK1b

Just done my 2016 last week,put the ign on then put the belt in 9 times on the last one you will hear a bing job done.I done it as my grandsons booster seat puts the alarm on when he gets out the car.
Cheers Tommy

Thanks guys, got sorted, no longer need to listen to the bing bing bing  2018 SDV6 Dynamic - Silicon Silver
2007 TDCI XS 90 SW - Cairns blue
1994 200 TDI Defender
1996 300 TDI Defender - (gone)
2016 Evoque Convertible - gone (wifeys)
2014 Evoque - gone (wifeys)
2010 RRS 3.0 - gone (wifeys)
2007 SC Sport HST - gone
2007 TDV6 HSE - gone (x2)
2003 Disco TD5 - gone (x2)
1996 Disco 200 TDI - gone (x3)