I have a 2009 L322 and the T90 remote doesn't work any more for the fuel burning heater. So i contacted Rob at duckworths to buy a new T90 remote but the one that turned up was a T91 remote,from what i have read on the forums this remote is incompatible with the L322. I contacted Rob and he says the T90 remote has been superseded by the T91 and it is the only option now. So i thought i would see if it would pair to my car and amazingly it does work and is simple to do. I removed fuse number 16 in the rear right fuse compartment in the boot,(it is the fuse with a pic of a door on it) i left it out for a few seconds then reinserted it and waited a couple of seconds then pressed and held the off button on the new remote,the red light stayed solid red then went off. And thats it it's paired,i pressed and held the on button and the green light came on and the fbh worked perfectly. I must say i wasn't expecting it to work and I'm well chuffed with myself, all ready for winter time again.

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This is a t91r remote

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Oh right that explains why it works then,i thought the T91 was the same as the T90 but without the pointy bit. Thanks for clearing it up.

The part number is LR 027493 by the way. 2009 Vogue SE Zermatt silver

I have edited my post but the label on my new remote does say T91R. Strange. 2009 Vogue SE Zermatt silver