Evoque Auto, 2013 Petrol low Mileage: revving high but not changing up gears

Hi Everyone
I'm hoping someone here can help out , I have a well looked after 2013 petrol evoque with low mileage ( 38,000km). I recently went on a longish drive and when I kicked down hard (until you hear the click at the base of the kick down) on the accelerator the car suddenly started revving very high but didn't change up a gear. Ever since then it keeps repeating this pattern when I kick down on the accelerator. It revs extremely high - like 6000-7000rpm without changing until I take my foot off the pedal then eventually it will release into the next gear. The funny thing is if I push the accelerator 3/4 of the way down it seems to change gears okay.
I have taken it to Landrover and had the car serviced and they didn't pick up any faults, I replaced the auxiliary battery under the glovebox and it hasn't seemed to help ( this was a couple of days ago), I recently tried it out in sport mode and this seems a mess allround, it seems totally confused about when to change. Changing with the paddles is absolutely fine.
I've even gone and bought my own OBD2 wifi device and hooked it up to obd-facile and the only error code it comes up with is a P0299 but none of the symptoms seem to align with a faulty turbocharger?
Has anyone come across this before?
Thanks
Ed

Welcome.
Not that I advocate sending people to other sites, but as it is the ejoke, you may get more help from a dedicated to it site. We tend to deal more with actual Range Rovers on here.
On saying that, I believe there are a couple of people who might help on the ejoke, but can't remember who. I'm sure they will pull up their mask and pull down their hoods, whilst standing in the shadows, and try to assist.

It's a small 4 pot not a v8 so it's gonna rev

especially kickdown, thats kind of the point!

Sounds fine to me.

Henry_b said:

It's a small 4 pot not a v8 so it's gonna rev

especially kickdown, thats kind of the point!

Sounds fine to me.

Click to expand...

Think he's running it on hair laquer.

tomcat59alan said:

Think he's running it on hair laquer.

Click to expand...

Hair lacquer can be used as a substitute for ether

So you might be right!

Henry_b said:

Hair lacquer can be used as a substitute for ether

So you might be right!

Click to expand...

It's a bit stickier .

tomcat59alan said:

It's a bit stickier .

Click to expand...

Aye!

I use it all the time on some old machinery

Okay fair abuse , if our currency ever becomes worth anything again i'll get a proper range rover
I know it typically will rev high but the problem is its not accelerating , ie its sticking at a certain speed (usually 80m/hr) and revving high and not changing gear...

Only sensible step forward is to do a sump dump, mileage may be low but seven years is enough time to gunk up the solenoids on the valve body.

eddster2020 said:

Okay fair abuse , if our currency ever becomes worth anything again i'll get a proper range rover
I know it typically will rev high but the problem is its not accelerating , ie its sticking at a certain speed (usually 80m/hr) and revving high and not changing gear...

Click to expand...

Before delving any deeper with automatic box issues, the best thing is to treat the box to a fluid change.

The box fluid is now 7 years old, so past due anyway, ignoring LRs BS 10 year change intervals.

Thank you !

eddster2020 said:

Thank you !

Click to expand...

Hope you get sorted, and you got off lightly re abuse, my internet connection went down.

tomcat59alan said:

Hope you get sorted, and you got off lightly re abuse, my internet connection went down.

Click to expand...

You can get a blue cable for that nowadays.

myfirstl322 said:

You can get a blue cable for that nowadays.

Click to expand...

Hello sausage, I'm not taking advice from you any more,I still cannot get all the ointment off my tablet.

tomcat59alan said:

Hello sausage, I'm not taking advice from you any more,I still cannot get all the ointment off my tablet.

Click to expand...

Well i've never heard it called it a tablet before... big boy.

XXX

myfirstl322 said:

Well i've never heard it called it a tablet before... big boy.

XXX

Click to expand...

Sure that's what you called it last time we played doctors and nurses. Xx

tomcat59alan said:

Sure that's what you called it last time we played doctors and nurses. Xx

Click to expand...

It's all a bit blurry tbh (rohypnol?), although I do remember a snippet of the lyrics wot was blasting ont music centre...."you raise me up........." or something?

My god you're strong for your age.