Sorry to jump on an old thread but I'm looking at carrying out the same oil service and sump change on my gearbox but can't have it on the garage ramp for three days waiting for the solenoid to be tested.

RR Phil is your kind offer still there to buy second hand-tested solenoid from you, I intend to test my solenoid as per your video but I would like some available to swap should I find any have failed, will send back if mine are ok. Initially, I had no errors but reduced gears, recently I have had P0783, have PM you RRPhil, thanks it's a 55 plate 4.2 V8 SC

Hi, just signed up, same problems on my gearbox but showing solenoid shift c. Grateful for any info or a solenoid? James[/b]

RRPhil, was the solenoid of Knightrider faulty?
Because Knightrider also changed the oil-cooler.
At what place the gearbox oil temperature is measured?
I’m still not driving this great car because of this problem.
Could it be a problem of not enough Voltage?

The MV (Magnetventil) solenoids (there are 3 of them in the 5HP24) are simple on-off solenoids, and you wouldn’t imagine that there’s very much to go wrong with them.

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Hi guys does any one know where I can buy a shift solenoid for my 4.4v8 many thanks

Hi All, Forgive me for jumping in but hope I can benefit from your experience.
I had a 2010 L322 from 30 - 100k miles and it was maintained perfectly at LR and not stressed, no towing.
Sold it to a buddy who has done the same but at 135k miles it has developed a fault. Intermittently it seems to skip 3rd gear going from 2nd to 4th with a bang! Is this likely to be major or do the intermittent symptoms suggest electrical (solenoid perhaps) ?
Really grateful for you to share your thoughts please

thanks
D

Just to give a long overdue update..... a year on and the gearbox is still behaving as it should. Solenoid change cured the "trans failsafe" issue. So if you have an early L322 4.4 V8 petrol and get the dreaded bong plus limp mode locked in 4th, after reading the fault codes it could just be a £20 solenoid which are easy to replace. Just don't make the first mistake I made which was not taking into account working on my back and so instructions were in reverse! I took A solenoid out instead of C... doh! Bit of head scratching until I realised.

Hello all, I am a complete newbie living the dream in rural Bulgaria, bought a 2003 L322 diesel (Italy import) and have a problem in so much as:
Recently it just stuck in a gear guessing 4 or 5 and by the time I limped it to a friends (maybe 5-10mins) I could smell a burning smell inside the cab which alarmed me.

I explained this to a mechanic and he was sayin he'll have to strip and repair the whole unit for about 1500 to 2000 euros as they are infamous for having to rebuild them!

Now after reading this maybe there's a glimmer of hope, but no one has mentioned the burning smell, or maybe I am being to optimistic. I haven't got a tool to check the codes and the previous owner disengaged the bong, which has led to numerous battery discharges leaving the lights on so dont even know if it just tripped into limp mode gear.

No I am not a mechanic, but also don't want to get ripped off so if anyone can give me a little bit of advice it would be so much appreciated.

AS you can see I am in the middle of nowhere and now minus a Range Rover

The earlier posts above refer to the ZF 5HP24 transmission fitted to the petrol models with the BMW M62 4.4 V8 engine. Your 3.0 TD6 diesel uses the GM 5L40-E transmission which is infamous for its unreliability once over 80,000 miles. Wear in the valve blocks creates leaks in the internal hydraulics which reduces pressures, causing the friction elements to slip – particularly the torque converter lock-up clutch, which wears through to the metal and deposits swarf into the sump. The first thing to check, therefore, is whether you have ‘glitter’ in your sump/fluid. Unfortunately, a complete rebuild is then inevitable. The fact that you could smell burning obviously doesn’t bode well.

Phil

Hi RRPhil,

I have a 2004 L322 with BMW M62 and ZF5HP24 transmission. I am getting the P0751 'Shift Solenoid A' OBD message and the car goes in to Transmission failsafe mode. I have experienced different behavior when it goes into that mode. Sometimes there is a noticeable thump and sometimes there isn't. I can clear the code and car drives fine for few miles before this happens again.

I talked to a shop and they suggested that I probably need to replace all the solenoids. Not sure if that is the issue since the noticeable thump leads me to believe that it is something mechanical. The car does drive fine in failsafe mode but avoid lower gears and the 5th.

Let me know if you have any suggestions.

Thanks.

I wondered if you had access to a multimeter so that you could check the resistance between pins 8 & 16 at the 16-pin plug at the back of the transmission? The MV1 (or SV1) solenoid should produce a reading of around 27-28Ω but the DTC is indicating an open circuit. To be honest, this is more likely to be an issue with the internal wiring harness than the solenoid.

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RRPhil wrote:

To be honest, I keep thinking of two things:

1. Shift solenoid faults with the 5HP24 are extremely unusual
2. By far the most common fault with the 5HP24 transmission is the failed B/C clutch axial bearing, which produces exactly the symptoms that you have described

However, as your diagnostic kit seems to be adamant that there’s a shift solenoid/wiring harness fault, that still seems to be the obvious way to proceed.

How certain are you that 4th gear is being engaged in failsafe mode and not 5th gear?

Phil