Hi, the car has effortlessly munched about 1000 miles the length of the country in last few days and I've noticed a few times when on cruise control on the motorway, it feels like it's momentarily juddering through the gearbox. Not sure if it needs a software update (some form gearbox slam) or if it's hunting for the correct gear. It's quite unnerving when it happens and puts you in mind of a car about to stall.

Any input appreciated.

Thanks.

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I think that folks were noticing this a few years back, can't remember the outcome though Ryan, mine does something similar, I only noticed it on the trip to France as a slight hesitation, as though the power has been cut for a split second. Before al resuming business as usual.

Will ask if there is a fix when it goes in for the tailgate in a few weeks time. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
KIA E-Niro 4+
2021 Discovery 5 D300 MHEV commercial

Yes Mark that describes it well. I knew the older 6 speed auto (eg on the SC) ones had so called gearbox slam, maybe when in slow moving traffic and that there was a software updated for that but didn't know about this seemingly minor glitch

+1 me to. more so at slow speed. does not happen that often, say once every 1k miles but coasting to say a traffic island in drive down to perhaps 10mph then decide it is ok to continue so press the pedal and there is definitely a second of no power before a bit of a jolt through what appears to be the drive train then all is well again. 405 AB exec seats Baltic and Cirrus
93 RR Classic efi

Remember it's easier to get forgiveness than permission!

Gone in order:
4.4 TDV8 SE - gone to a good home
93 Classic hard dash Plymouth Blue
03 L322 Oslo Blue
2000 Disco TD5 ES Epsom Green
98 P38 Rioja Red
89 Classic Cairngorm Brown

http://www.fullfatrr.com/forum/topic10797....8+motorway

Found this post. Think it's the one I remember seems a reflash can cure it. Something to do with erroneous data being sent to the injectors I think. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
KIA E-Niro 4+
2021 Discovery 5 D300 MHEV commercial

The bump fix software on the 6-speed still doesn't resolve it fully. A transfer box clutch calibration helps, but it comes back again shortly...

I understand the 8-speed is much improved running the latest software though.  Visiting from DISCO3.CO.UK
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Would be handy to know what the TSB number is for the issue. According to the thread above Farnell in Leeds were referred to a TSB by Land Rover, and they recommended a specific download to fix it. So it is a know problem. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
KIA E-Niro 4+
2021 Discovery 5 D300 MHEV commercial

Here you go;
Land Rover Technical Bulletin LTB00267 2nd to 1st gear rollout shunt . 2008 MY Supercharged
Rimini Red / Jet
four zone climate
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Mine did it twice last month (coughed and felt like it was going to stall before regaining power) and I found the above post referring to the fuel injector software update on the forum. I passed this onto the dealer who updated the software and so far the problem has not recurred.