Automatic Gearbox not changing down on hills

[Oldreds]

My 2019 automatic petrol Honda jazz slows right down on hills,when I try to accelerate nothing happens,tried taking foot off accelerater and booting it to the floor but no luck.
It seems like it needs to change down to a lower gear but nothing is happening.
We have had the car for over a year and the previous owner was disabled and only did a 1000 miles a year so the car has only 7000 miles on it.

[olduser1]

Would you mind providing more info, Has your Jazz always had this issue?
When was your Jazz last serviced Any changes or faults appearing just before the lack of acceleration?

[Hanszl2001]

When you put the gearstick in S mode, can you use the paddles for shifting gears?

[Oldreds]

Just tried the paddles all working fine and quite good fun.in my post I forgot to mention that this is my wife’s car which gets little use and I drive it once a week to give it a bit of a run.

[langserve]

Sounds like it is fine if the paddles are working. If it is CVT then surely the whole point is that it does not shift down a gear on hills. My UK model Jazz is manual but my Japanese Fit is CVT and it does not emulate a gear change on hills - the revs just go up as the CVT adjusts to demand if I give it more throttle.

[ColinS]

slows right down on hills,when I try to accelerate nothing happens

From this I think we are all assuming that you are going up a hill.  But then you say:

It seems like it needs to change down to a lower gear but nothing is happening.

Which would indicate that you are going down a hill and somehow it has changed to a higher ratio which is holding it back.

It would be  nice if you could clarify, but either way I think there is something amiss.

[HertsHonda]

Going uphill ?
Going  downhill ?

Page in Owners Manual - 414 onward , may help.

Intelligent Speed Limiter?
Adjustable Speed Limiter?

Quote from manual ~ "The intelligent speed limiter may not hold the set
speed limit when driving downhill. If this occurs, slow
down by depressing the brake pedal"

Binding Brakes?

[edam]

I have had that on mine and once I had a HGV behind me flashing me as I was going too slow but the car just would not change down. It got stuck in "no mans land"
BUT
Im wondering if the increase in performance I got after the rear tyres were changed  also improves this problem.
I will find a hill