Discovery 4 in Mabuasehube





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  1. #1
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    Default Discovery 4 in Mabuasehube

    Hi Everyone

    We have just returned from a great time in Mabua and the South African side of the Kgalagadi. This was the first time with the D4 and what an experience it was.
    1) I have never experienced a vehicle that capable on the road getting there and also handling the soft sand.
    2) Learning the 'new' 4WD system was some getting used to.
    3) I only lowered the tyres to 2 bar in the front and 2.4 bar at the back. No issues whatsoever.
    4) As soon as we struck the thick sand after Tshabong the other vehicle in the party was ploughing with an off road caravan and it was decided that the Disco should tow. Again very capable.

    However 2 things to mention.

    1) I noticed the vehicle was very low one morning after our overnight stop in Vryburg on route to Mabua. I phoned around and was told to do a test the following evening to see where the air leak is. With the battery disconnected the vehicle only dropped its backside during the night. It was difficult to see if one side was leaning more. The following day I raised the suspension to Extended Off Road Hight with the lift rods and left the vehicle stationary for 2 days with the battery disconnected. 2 Evenings later and the vehicle was just as tall as I left it, not dropping an inch. I did the same exercise every day and noticed the car was leaning on the left back corner. I am assuming its an air bellow? Any thoughts as a lot of people tell me that the rear air bags hardly ever give problems.

    2) The second issue only started today. We left Pretoria and 30min into our drive back to Hoedspruit I noticed some harsh gear shifting. Later whilst being on cruise control the acted 'choppy and jerky', struggling to hold the gear. I went to command shift and all was good. I phoned Nico at ZF SA and he confirms that all the symptoms described sound like it needs an oil service with new oil and a filter. The car has 127 000km on the clock and has never had a gearbox service. I really hope that is the issue.

    Cheers

    Andre
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  3. #2
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    Default Re: Discovery 4 in Mabuasehube

    For those interested in the video of our trip.

    https://www.youtube.com/watch?v=_k41FXWiK68
    2011 Discovery 4 V8 HSE

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  5. #3
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    Default Re: Discovery 4 in Mabuasehube

    Cool clip, looks like a great trip!

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    Default Re: Discovery 4 in Mabuasehube

    Thanks for your video..looks like a good trip. Well done
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    Default Re: Discovery 4 in Mabuasehube

    Quote Originally Posted by Fourie110 View Post
    For those interested in the video of our trip.

    https://www.youtube.com/watch?v=_k41FXWiK68
    Awesome video and looks like you had an awesome trip bud!!! Nice going!

    Unfortunately I cant help with the air suspension question but Nico from ZF is definitely the best man to speak to regarding the gearbox!
    Rob,

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    Default Re: Discovery 4 in Mabuasehube

    Awesome video brings back some lovely memories of recent trips in our Disco 4, the most amazing vehicle I have ever owned.

    Regarding the gearbox issue, I concur it will be wise to chat to an expert regarding the possibility of the oil service but after a trip through Botswana and Zim in December 2016 towing a off road caravan for 4500km I experienced a similar issue with my Disco 4 with the 8 speed gearbox. After some research on the web and chatting to some experts I discovered that the gearbox ecu apparently adjusts to the drivers behavior and obviously with the stress of the trip towing a caravan through seriously tough off road terrain the ecu adjusts itself to compensate for the driving behavior.

    Strange as it may be a couple of weeks later with regular driving the vehicle was behaving normal again, may be my imagination but 40k km later it is perfect. Just saying
    Last edited by Traction; 2019/07/04 at 07:30 PM.
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  13. #7
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    Default Re: Discovery 4 in Mabuasehube

    Quote Originally Posted by DETOUR-GP View Post
    Awesome video and looks like you had an awesome trip bud!!! Nice going!

    Unfortunately I cant help with the air suspension question but Nico from ZF is definitely the best man to speak to regarding the gearbox!
    Hi Rob

    Thanks for the reply. The first thing I did was I phoned Nico at ZF and the symptoms described sounded like it needs an oil change. Would love to take it to ZF but as I'm based in Hoedspruit it is rather difficult. However John at The Landy Shop, who also owns a D4 V8 said he can do an oil and filter change for me.
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    Default Re: Discovery 4 in Mabuasehube

    Quote Originally Posted by Traction View Post
    Awesome video brings back some lovely memories of recent trips in our Disco 4, the most amazing vehicle I have ever owned.

    Regarding the gearbox issue, I concur it will be wise to chat to an expert regarding the possibility of the oil service but after a trip through Botswana and Zim in December 2016 towing a off road caravan for 4500km I experienced a similar issue with my Disco 4 with the 8 speed gearbox. After some research on the web and chatting to some experts I discovered that the gearbox ecu apparently adjusts to the drivers behavior and obviously with the stress of the trip towing a caravan through seriously tough off road terrain the ecu adjusts itself to compensate for the driving behavior.

    Strange as it may be a couple of weeks later with regular driving the vehicle was behaving normal again, may be my imagination but 40k km later it is perfect. Just saying
    Hi Traction

    After noticing the harsher gear changes I immediately thought it must be the ECU that learnt my harder driving style, but the fact that the gearbox doesn't hold sixth gear on an even, steady flat tar surface tells me something is slipping a bit. I then drove it in 'Command Shift' which was much better, but after an hour or two some gears were surging and slipping as well, not badly but the rev counter kept accelerating and decelerates when my right foot was as steady as a rock.

    Cheers
    Andre
    2011 Discovery 4 V8 HSE

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    Default Re: Discovery 4 in Mabuasehube

    Hi Fourie, nice your trip.
    Gearbox, remember LRover says its sealed for life, this is not so , the oil cant last for ever.You experience thi issue because the gearbox oil is past it sell by date, at your mileage, take it to ZF, they have a special and give it a full oil change. It will be like new again, and 100 000 km from now , do the same again.You will see the oil will be pitch black, because of the torque converter clutches working so hard and burning the oil.

    Re the suspension, what happens , sometime, its my take on it, you will have a dust particle , from the silica crystals in the compressor , getting into the valve blocks, front or rear , and it make the valves sticky. You had a piece in the valve and it worked it self loose, only Landies are self healing vehicles. If you have this constantly , it helps to take out the valve block rear and clean it out, lot of video's available.

    Re.Tyre pressure, for sand driving your tyres is still to inflated, need to take down between 120 and 160 kpa , and if you really struggling you can go down to low as 80 kpa, 2 40 kpa is still too hard
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    Default Re: Discovery 4 in Mabuasehube

    Quote Originally Posted by Fourie110 View Post
    For those interested in the video of our trip.

    https://www.youtube.com/watch?v=_k41FXWiK68
    Nice video! What is your toolkit? It's a bit more than an iPhone as I see some good telephoto shots there that don't seem to be of a digital zoom nature. What do you edit in?
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    Default Re: Discovery 4 in Mabuasehube

    Can't add anything to your questions, but wanted to say nice video!
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    Default Re: Discovery 4 in Mabuasehube

    Quote Originally Posted by Koos Best View Post
    Hi Fourie, nice your trip.
    Gearbox, remember LRover says its sealed for life, this is not so , the oil cant last for ever.You experience thi issue because the gearbox oil is past it sell by date, at your mileage, take it to ZF, they have a special and give it a full oil change. It will be like new again, and 100 000 km from now , do the same again.You will see the oil will be pitch black, because of the torque converter clutches working so hard and burning the oil.

    Re the suspension, what happens , sometime, its my take on it, you will have a dust particle , from the silica crystals in the compressor , getting into the valve blocks, front or rear , and it make the valves sticky. You had a piece in the valve and it worked it self loose, only Landies are self healing vehicles. If you have this constantly , it helps to take out the valve block rear and clean it out, lot of video's available.

    Re.Tyre pressure, for sand driving your tyres is still to inflated, need to take down between 120 and 160 kpa , and if you really struggling you can go down to low as 80 kpa, 2 40 kpa is still too hard
    Good day Koos

    Thank you for your input. I do agree on the gearbox oil. I just wish I had done it earlier, but I've only owned the vehicle for a couple of months now and haven't had time to do it yet. I will get this done ASAP as my next trip in in August.

    As for the suspension, I really hope it's something small like just cleaning the valve blocks. It's going to be very costly to replace both the rare airbags.

    Cheers

    Andre
    2011 Discovery 4 V8 HSE

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    Default Re: Discovery 4 in Mabuasehube

    Quote Originally Posted by Koos Best View Post
    Hi Fourie, nice your trip.
    Gearbox, remember LRover says its sealed for life, this is not so , the oil cant last for ever.You experience thi issue because the gearbox oil is past it sell by date, at your mileage, take it to ZF, they have a special and give it a full oil change. It will be like new again, and 100 000 km from now , do the same again.You will see the oil will be pitch black, because of the torque converter clutches working so hard and burning the oil.

    Re the suspension, what happens , sometime, its my take on it, you will have a dust particle , from the silica crystals in the compressor , getting into the valve blocks, front or rear , and it make the valves sticky. You had a piece in the valve and it worked it self loose, only Landies are self healing vehicles. If you have this constantly , it helps to take out the valve block rear and clean it out, lot of video's available.

    Re.Tyre pressure, for sand driving your tyres is still to inflated, need to take down between 120 and 160 kpa , and if you really struggling you can go down to low as 80 kpa, 2 40 kpa is still too hard
    I opted for the XS model, coils all round. I had it lifted by 50mm and fitted 265/60/18 tyres, never have a problem in sand nor do I have bellows etc that can give trouble.

    I agree with Koos on the tyre pressures. Khgalighadi parks tell you to reduce to 1.6 bar just for their roads not the 4x4 roads. It is a nicer ride and I reduce to 1.4 for their 4x4 roads to Bitterpan etc.
    Last edited by pwgg; 2019/07/05 at 09:01 AM.
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    Default Re: Discovery 4 in Mabuasehube

    Quote Originally Posted by Kortgat View Post
    Nice video! What is your toolkit? It's a bit more than an iPhone as I see some good telephoto shots there that don't seem to be of a digital zoom nature. What do you edit in?
    Thank you very much for your comments. My main tool is my old Canon 5D mk2 with a 40mm pancake lens, as well as a 1st generation 100-400mm Canon L lens. I do add some shots from my GOPRO Hero 4 and iPhone 6S. Once I have all the footage I edit in Adobe Premier Pro.

    The kit is rather basic but it works well and is very reliable, and yes you are quite right, no digital zoom.

    Cheers
    Andre
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    Default Re: Discovery 4 in Mabuasehube

    Quote Originally Posted by Groenman View Post
    Can't add anything to your questions, but wanted to say nice video!
    Thank you Groenman. I appreciate your comments.
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    Default Re: Discovery 4 in Mabuasehube

    Quote Originally Posted by Fourie110 View Post
    For those interested in the video of our trip.

    https://www.youtube.com/watch?v=_k41FXWiK68

    Awesome video, thanks for sharing
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    Default Re: Discovery 4 in Mabuasehube

    Quote Originally Posted by Orxy View Post
    Awesome video, thanks for sharing
    What he said

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    Default Re: Discovery 4 in Mabuasehube

    Gee man, that makes me miss the Kgalagadi!!! Loved the video . Will show it to my wife later to convince her to go back

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    Default Re: Discovery 4 in Mabuasehube

    I have a 2009 Disco 3 TDV6. In 2017 on a trip to Moremi I experienced vibrations at 1700 rpm. It became worse under load esp when towing my camper trailer. I had to use command shift on occasion. I discovered from Roverland that the vehicle uses the same gearbox as in a Jaguar diesel 2.7. LR say that you need to service the box only after 250000 kms while Jaguar say after every 40000 kms. Go figure. Anyway I took the vehicle to ZF in Bellville where they gave it a thorough test drive and said that there is nothing wrong with the box or drive train. They did a double high pressure flush and put it all back together etc. That was 25000kms ago [current kms 211000] - there is no vibration at all. Since then I have done a trip to the Kgalagadi [towing] and travelled up to the Eastern Cape and Sani Top via Naudesnek and more.It seems that a gearbox flush every 40 to 50 thousand kms is wise.
    I cannot fault the service I got at ZF by the way, they really took an interest with at least 2 technicians on the test drives.Click image for larger version. 

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  34. #20
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    Default Re: Discovery 4 in Mabuasehube

    Quote Originally Posted by kreeves View Post
    I have a 2009 Disco 3 TDV6. In 2017 on a trip to Moremi I experienced vibrations at 1700 rpm. It became worse under load esp when towing my camper trailer. I had to use command shift on occasion. I discovered from Roverland that the vehicle uses the same gearbox as in a Jaguar diesel 2.7. LR say that you need to service the box only after 250000 kms while Jaguar say after every 40000 kms. Go figure. Anyway I took the vehicle to ZF in Bellville where they gave it a thorough test drive and said that there is nothing wrong with the box or drive train. They did a double high pressure flush and put it all back together etc. That was 25000kms ago [current kms 211000] - there is no vibration at all. Since then I have done a trip to the Kgalagadi [towing] and travelled up to the Eastern Cape and Sani Top via Naudesnek and more.It seems that a gearbox flush every 40 to 50 thousand kms is wise.
    I cannot fault the service I got at ZF by the way, they really took an interest with at least 2 technicians on the test drives.Click image for larger version. 

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    Good day kreeves

    Thank you for your response. I am beginning to think I should just jump in the car and go visit Nico at ZF in Johannesburg. They are the experts and I'm sure they will take good care. My only thing is I need to fix my air suspension issue as well. So time is my biggest problem as I work here at a game lodge close to Hoedspruit for 6 weeks at a time.

    So here is my dilemma: I would love to try and see if my extended warranty from Hollard might pay for the repairs on the air suspension (I doubt they will pay for the gearbox oil service as that is a service and not a breakage). John here in Hoedspruit at The Landy Shop seems to be very good with Land Rovers, BUT he is not affiliated with RMI so I can't use them if I want to claim from Hollard. I have just returned back to work so I am a bit stuck here for 6 weeks (I might be able to take a day or two off from work if really necessary) and also I leave for another Botswana trip in 6 weeks.

    What to do.....
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