I just thought I would share my good news regarding the gearbox on my Range Rover Vogue SE 2010MY which had been causing me problems since I bought it, in case it helps anyone else.

Having bought the car and got it off the forecourt and on to the motorway it was clear that the six speed auto gearbox was not changing between 5 and 6 properly. In fact the revs would go as high as 3500 before changing. The dealer arranged for a flush. This thoroughly wrecked the gearbox and it needed to be completely overhauled. Having got it back( a few weeks later) the gearbox was demonstrating exactly the same symptoms for gear 5 and 6. It went back to the gearbox garage. They fitted new mass air flow sensors. Still the same problem between 5 and 6. I tried resetting the gearbox, no change. All during this time the Gap IID tool indicated that there were no problems with the transmission module.

Having read a few threads here and other forums I decided to try new tyres all round. The dealer had fitted an odd, cheap tyre to get it through the MOT . All the other tyres were cheap, horrible ones, and one was very near the limit. I had four new Pirelli Verde tyres fitted and this solved the problem as soon as I left the tyre shop forecourt. I am so pleased.

Excellent news, pleased it's sorted..  Pete

__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Classic case of different wear patterns and slightly different rolling circumference as a result on the same axle completely confusing the gearbox, I had this on my old e39 528i in the rear- baffles me for ages until I got a new pair of tyres for mot- completely fixed the issue! 2007 TDV8 Vogue SE
2005 BMW E63 645ci
2009 5.0 Supercharged autobiography
2024 Porsche Macan

One to pop in the knowledge box. Cheers

Porthbay wrote:

The dealer arranged for a flush. This thoroughly wrecked the gearbox and it needed to be completely overhauled. Having got it back( a few weeks later) the gearbox was demonstrating exactly the same symptoms for gear 5 and 6. It went back to the gearbox garage. They fitted new mass air flow sensors. Still the same problem between 5 and 6. I tried resetting the gearbox, no change. All during this time the Gap IID tool indicated that there were no problems with the transmission module.

ZF do not recommend flushing and that was enough for me to not go with a megaflush. 2012 TDV8 Vogue (L322)

thats Interesting, I was advised to have my gearbox flushed but I thought I would just drain the oil two or three times when I did the engine
Glad I didn’t now
interesting about the tyres also RR 2005 4.4 petrol
Any spelling mistakes are the fault of spellchecker
Previous MG J2, CITROEN light 15 x 2 gone unfortunately
Present MERC 180e, RANGE ROVER L322, JAGUAR XJS, MERC 280SE, MG F, JAGUAR S-Type 6v 2003, jaguar s-type 8v 2004, Ford Cougar

Straight from the horse’s mouth:

Thank you for your enquiry.

ZF do not recommend any flushes for the transmission. If you are experiencing any issues with shifting quality then it is strongly recommended that you have the vehicle inspected by an experienced technician.

Kind regards,
ZF Technical Support 2011MY 4.4TDV8 Autobiography Baltic Blue
TVR Griffith
Alfa Romeo Mito QV

Interesting. I wonder why they specifically recommend against it. Especially has so many have had it done and its worked wonders. 2011 4.4 TDV8 Vogue SE - 'Black Betty'
2000 4.0 P38 HSE - 'Green Goblin' - Gone.
Audi..Mini..BMW..

A normal 'service' works wonders as well...... 2012 TDV8 Vogue (L322)

I wonder if the ZF comment was referring to using a flushing oil rather than using the correct fluid.

Note that the ZF-produced 6-speed gbox fitted to every brand of vehicle beginning from somewhere in 2008 through to at least the end of LR fitting the 6-speed gbox to its vehicles was fitted with white-metal stator bushes which don't like long oil change intervals. If the oil is not changed regularly then best not to change at all until rebuild time as new oil is thinner than the old oil that is carrying metal particles which then immediately causes E-clutch pressure issues due to the worn bushes. When rebuilt by ZF the previous bronze stator buses are used. Been there with my MY10 D4 but my brother's MY08 RRS' VIN is before the start of the white-metal bushes.

In the case of my car, when I took it to the specialist for the mega flush the only problem was the 5 to 6 gear change. The guy explained that 9 out of 10 cars could be successfully mega-flushed. It seems that mine was the tenth. When it came out of there, any revs above about 2000 locked the transmission completely. Later, the gearbox garage said that all the clutches had been completely damaged. My car had less than 100,000 miles on the clock.

So you pay your money and take your chance!

Thanks for all the interesting replies by the way.

By "locked" I mean put it into limp mode.

The E-clutch is on the same shaft as the pump with its white-metal bushes and the effect is the clutch not locking quickly enough when trying to use 5th or 6th due to inadequate pressure from the leaking pump, which then triggers limp-home mode. My D4 had done 120K KMS of country driving with me always guarding against unnecessary torque converter slip, but too many kms for the worn white-metal bushes after the oil and filter change on a gearbox that had no issues before the oil (LG6) change.