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Home > Faults & Fixes (L663) > 25MY Defender Gearbox Engagement Delay
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MICKOD



Member Since: 25 Apr 2025
Location: Dublin
Posts: 2
Ireland 
Yes correct it goes to neutral at every stop and then when you let your foot off the brake it makes that loud hiss sound as it engages first gear. The dealer where the vehicle is still at says this is normal in all 2025 diesel defenders and disco’s. Just wondering if anyone has a new defender and if they can confirm this? It doesn't matter what mode your in the noise is always there.

They said that going to neutral and the roll back is standard now and a fuel saving characteristic, but the noise cannot be normal from vehicle that’s costs this much.
Post #1066365 26th Apr 2025 11:22am
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essentian



Member Since: 02 Apr 2025
Location: East Mids
Posts: 26
United Kingdom 
Are you sure it’s not the e-brake engaging/disengaging? If so, Mine does the same.
Post #1066379 26th Apr 2025 2:15pm
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Flinders



Member Since: 17 Feb 2024
Location: West Yorkshire
Posts: 79
England 
Mikod I rejected my first D350 and I am now 4 weeks in to the replacement D350 and I can 100% confirm that the new one has none of the problems and it is not what all new defenders do. MY25.5 Defender 90 D350 X Dynamic HSE - Maximus
MY25 Defender 90 D350 X Dynamic HSE - Boris - REJECTED Sad
MY18 Discovery 5 3.0ltr TD6 HSE Lux - Derek
Post #1066382 26th Apr 2025 2:54pm
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 3071
United Kingdom 
l never get the hissing noise from mine. What would that be? I have a short whirring motor noise if engage the park brake but that never happens in normal driving
Post #1066386 26th Apr 2025 4:17pm
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essentian



Member Since: 02 Apr 2025
Location: East Mids
Posts: 26
United Kingdom 
Apologies, just listened back to the video. Can hear the e-brake engaging but then also the separate hiss after. Sadly no idea, what it could be; only hiss I have is from the air compressor for the bags.

Had LR Assist out this morning, told me rolling back was normal; didn’t argue with them but I’ve never had it in any other of the 6 autos I’ve had…
Post #1066394 26th Apr 2025 6:20pm
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Flinders



Member Since: 17 Feb 2024
Location: West Yorkshire
Posts: 79
England 
My rejected defender did have lots of whirring, clunking from the EPB. Land Rover assist said it was worryingly noisy but LR dealer said normal.

Whether it was part of the problem we’ll never know🤷🏼‍♀️. The replacement D350 certainly doesn’t make these noises. MY25.5 Defender 90 D350 X Dynamic HSE - Maximus
MY25 Defender 90 D350 X Dynamic HSE - Boris - REJECTED Sad
MY18 Discovery 5 3.0ltr TD6 HSE Lux - Derek
Post #1066410 26th Apr 2025 7:45pm
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MiltonMan



Member Since: 07 Mar 2024
Location: Brisbane
Posts: 17
Australia 
MICKOD wrote:
Yes correct it goes to neutral at every stop and then when you let your foot off the brake it makes that loud hiss sound as it engages first gear. The dealer where the vehicle is still at says this is normal in all 2025 diesel defenders and disco’s. Just wondering if anyone has a new defender and if they can confirm this? It doesn't matter what mode your in the noise is always there.

They said that going to neutral and the roll back is standard now and a fuel saving characteristic, but the noise cannot be normal from vehicle that’s costs this much.


Hey mate, I have a 2025 D250, I get none of those symptoms in mine. I hope you get it sorted.
Post #1066421 26th Apr 2025 11:07pm
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billy2shots



Member Since: 23 Oct 2024
Location: England
Posts: 43
United Kingdom 
lightning wrote:
lt sounds like they've deleted the automatic three second "hold" on releasing the brake when stationary and in "D".

Does it work if you double tap the brake pedal or press it down harder once stationary? "HOLD" should appear and l know it's a workaround but maybe that's what they expect people to do now.

Obviously you can turn on "AUTO HOLD" on the menu to avoid having to double press the brake pedal. Does that stop your Defender rolling back when doing a hill start?



No they haven't deleted the 3 second hold (even with auto hold off).

That's exactly how the tech that I took at, said to drive. So basically papering over the crack.
Post #1066457 27th Apr 2025 1:32pm
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 3071
United Kingdom 
Well, my 2022 has a three second hold after you release the brake pedal even with "auto hold" turned off.
So it's either been deleted or it should still be there and it's a software issue somewhere.
Post #1066462 27th Apr 2025 3:08pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17727
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
essentian wrote:
...Had LR Assist out this morning, told me rolling back was normal…


I'd suggest he is talking cobblers!

The Grenadier (which I believe has the same ZF gearbox) does not roll backwards under these conditions which suggests that there is no technical reason for it to happen, other than JLR incompetence.
Post #1066464 27th Apr 2025 3:23pm
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mse



Member Since: 06 Apr 2008
Location: UK
Posts: 5090
United Kingdom 2016 Defender 110 Puma 2.2 XS CSW Scotia Grey
To answer an earlier question...Autohold (which i have on and originally thought it was) doesnt solve it, and doesnt apply or activate every time for example at start up and even if you use auto hold and do all the little tricks like slower move from brake to accelerator etc it creates other problems. Mike
Post #1066581 29th Apr 2025 8:55am
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mse



Member Since: 06 Apr 2008
Location: UK
Posts: 5090
United Kingdom 2016 Defender 110 Puma 2.2 XS CSW Scotia Grey
blackwolf wrote:
essentian wrote:
...Had LR Assist out this morning, told me rolling back was normal…


I'd suggest he is talking cobblers!

The Grenadier (which I believe has the same ZF gearbox) does not roll backwards under these conditions which suggests that there is no technical reason for it to happen, other than JLR incompetence.


Land rover are saying its normal...its normal from a point in the defender production say 23MY, in so far as they all do it...but its not working as its should so is not correct.

I maintain its dangerous Mike
Post #1066582 29th Apr 2025 8:56am
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mse



Member Since: 06 Apr 2008
Location: UK
Posts: 5090
United Kingdom 2016 Defender 110 Puma 2.2 XS CSW Scotia Grey
lightning wrote:
Well, my 2022 has a three second hold after you release the brake pedal even with "auto hold" turned off.
So it's either been deleted or it should still be there and it's a software issue somewhere.


Auto hold is a red herring and auto hold doesnt solve the main problem as, for example, when you start the car auto hold wont engage.

I think its not gear box, its something like the smart drive system where its sending power front/back or all 4wd or similar, nothing to do with the box. Mike
Post #1066583 29th Apr 2025 8:58am
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essentian



Member Since: 02 Apr 2025
Location: East Mids
Posts: 26
United Kingdom 
mse wrote:
blackwolf wrote:
essentian wrote:
...Had LR Assist out this morning, told me rolling back was normal…


I'd suggest he is talking cobblers!

The Grenadier (which I believe has the same ZF gearbox) does not roll backwards under these conditions which suggests that there is no technical reason for it to happen, other than JLR incompetence.


Land rover are saying its normal...its normal from a point in the defender production say 23MY, in so far as they all do it...but its not working as its should so is not correct.

I maintain its dangerous


I agree. Especially as my drive is on a slope & as you point out, the auto hold doesn't engage at initial startup/pull-off.
Though for me the biggest issue is delay when pulling at out busy junctions. Strangely what I don't have any issue with, is shifting through the gears on either gentle or spirited acceleration or clunking/jerking at low speeds (Like Flinders had); mine is very smooth in that regard...

I feel the "they all do that" is a massive cop out & as the kids now say, "gaslighting" folks with the issue. it's not normal or acceptable behaviour for an auto transmission.
Post #1066585 29th Apr 2025 9:21am
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