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Discussion Starter #21
looks like I had an O2 sensor that came unplugged, also ran some lucas oil injector cleaner, cylinder 1 is no longer misfiring.
i had disconnected the battery which is probably what caused the air suspension inactive, I reset the code and was able to pump up the air suspension so far I dont hear any air leaks.


I guess my next step is to test the transfer box motor potentiometer, later today will buy some alligator clips and run 12v dc into the motor see if it spins and hopefully can clean the wipers, the weird thing is I have 2 transfer box motors, apparently the one I got from the salvage yard isnt working either. but this is kind of suspect because the amount of codes its throwing also makes it seem like the motor itself is actually disconnected, I have in fact double checked that the motor is connected, perhaps it could be a fuse or a bad connection on the other end?:

Transfer Box Module Fault Reading Complete...

0x5223 0x5223 Noise on actuator signal (0x5223).
0x52E7 0x52E7 ASC1 lost from CAN (0x52E7).
0x52ED 0x52ED INSTR2 lost from CAN (0x52ED).
0x52F2 0x52F2 INSTR3 lost from CAN (0x52F2).
0x52F3 0x52F3 EGS2 lost from CAN (0x52F3).
 

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Discussion Starter #22
ok so it appears those codes were from the previous transfer box motor... the one I put on from the salvage yard has yet to throw any new codes after clearing the old ones, after driving around a few times I have been thrown into 4th gear and trans failsafe multiple times. but no transfer case codes.....

I am now seeing these codes from the instrument pack:

MKIII Communications Performed by RSWsolutions - All Comms Software.
L322 Instrument Cluster Module Query Results: Performed on 6/16/2020 9:45:03 PM
!.!
Instrument Panel Module Fault Reading Complete...

0xBD 0x00BD EBV function fault received from ABS ECU.
0x8D 0x008D Transmission Interface Bus fault.

what could the transmission interface bus fault be? is this a faulty transfer box module(computer?) or is there something I am missing here, the car is stuck in high range, and when I try and switch to low range, I see "high range" flash on the dashboard. and nothing happens. I tried pressing it again, and no light flashes whatsoever.
 

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Discussion Starter #23
before I send the transfer box motor off to XeModex for an $389 repair, Id like to know this is in fact the culprit. I have a strong feeling that it is, but it seems strange the same codes are not reappearing after being thrown into failsafe mode.
 

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Discussion Starter #24
ok after clearing everything again, and driving around a bit, I have ended up with a new code:


MKIII Communications Performed by RSWsolutions - All Comms Software.
L322 ECM_M62 Module Query Results: Performed on 6/17/2020 11:14:01 AM
.!
Petrol Engine Management Fault Reading Complete...

0x17F P0000 Transfer box controller signal fault.

----------------------------------------------------------------

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MKIII Communications Performed by RSWsolutions - All Comms Software.
L322 Instrument Cluster Module Query Results: Performed on 6/17/2020 11:14:42 AM
!
Instrument Panel Module Fault Reading Complete...

0x8D 0x008D Transmission Interface Bus fault.
 

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I have also replaced the Neutral Position Switch, I went even further to replace the transfer case motor/potentiometer.
 

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Discussion Starter #26
I've ordered a transfer case control module (TCCM) on ebay, went with the bosch instead of siemens, part number 7519855-01. from what i understand these dont have to be programmed by land rover, I'm just hoping that it works. I am also sending my transfer box motor to Xemodex for repair. it took a while for me to get the RSW tuner, ended up paying full price for the real one because that chinese junk didnt show up. I've replaced all the spark plugs with Bosch Platinum +4, I have one ignition coil arriving in the mail today, (tested the coil by swapping it from cyl 1 to cyl 3 and it is in fact a bad coil because cylinder 3 started misfiring) the engine misfire will no longer be an issue. next job on the engine will be to replace the valve cover gaskets, since I did notice oil on the plugs, the gaskets are cheap so its a rather inexpensive fix if you do it yourself, I've put a lot of man hours into this rig, hope it all pays off. no point of having the engine fixed up if I'm stuck in 4th gear 90% of the time, but i've decided to go all in on my rig and hope for the best.
 

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Discussion Starter #27
just to show some of the work I've done to my rig:

287180

the steering column immobilizer went out, locking the ignition cylinder, I had to take apart the metal box on the steering column by drilling out the rivets, then disconnected the components inside and taped them off with electrical tape, I took the blue wire from the steering column and re-wired it to the foot light, so by turning on the light, that unlocks the ignition cylinder allowing me to turn the key, I also disabled the steering wheel lock, and had another mechanic help me re-wire the ignition cylider to the starter, bypassing the entire anti theft system, essentially my rig is hot-wired, but still requires the key, saved $2400 on an upper steering column.

287181

some of the extra systems were taking a toll on my battery, I had to removed the 6 disc changer, the dvd screen, and the GPS module from the trunk area (no point in having a GPS module when my double din has GPS feature. this reduced my battery drain, and now my vehicle no longer has issues starting, the starter gets plenty of juice every time.


287182

rebuilt the neutral position switch, had to drill the rivets, clean the inside, and check the wires for continuity, add dielectric grease, then put it back together with some machine screws and nuts from the local hardware store.

287183

replaced coolant hose, flushed the coolant system, and put the proper pentofrost coolant.

287184

Replaced the AC Blower Motor, ( had to removed the top dash, and saw a hole in the top plastic to access it, this method is easier than removing the entire instrument pack)

287185

I've also replaced all of the fuses in the fuse box.
 

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Discussion Starter #28
I did all of the spark plugs, but I noticed there was some oil leaking down onto the plugs,
so I am going to replace the valve cover gaskets, probably next week. just ordered them from FCP euro, part numbers are below.
287187
 

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I've ordered a transfer case control module (TCCM) on ebay, went with the bosch instead of siemens
I don’t understand. Bosch manufactured the transmission controllers and Siemens produced the transfer box controllers.





Both are plug-n-play (i.e. aren’t coded to the vehicle) but a second-hand one will have the calibration/adaptions for the previous vehicle stored in it.

Phil
 

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Discussion Starter #30
Phil, thanks for spotting that, appears the seller was selling an ECU with the TCCM part number...
I have canceled that order, will be ordering from a different seller.
 

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Did you check your transmission filter to make sure it’s the made in Germany one. My old one had the date still stamped on it it was old.
 

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Discussion Starter #32
the previous owner serviced the trans regularly at aamco, last time I checked the fill hole(about a month ago), the fluid was still relatively clean. I suppose a new filter and fluid change couldnt hurt but I dont feel any slipping or any problems shifting, the vehicle drives perfect for about 20 minutes, then BAM failsafe mode 4th gear. electrical gremlins. I am not getting any transmission codes besides Transmission Interface Bus fault, its all transfer box related. Yesterday I sent the transfer box motor to XemodeX it was $389 plus tax and shipping. once the motor arrives I will drain the transfercase, then refill, and attach the new motor, I ordered some redline MT90 gear oil which is GL-4 approved. will test by shifting to high/low a few times. if these things don't resolve the issue, I will go ahead and service the trans, replace fluid, filter, and trans oil cooler. my options for replacing the trans would probably be limited to the salvage yard, and I would have to drop it/replace it myself. I have experience rebuilding engines but rebuilding an auto trans is beyond my skillset, I am a student and have another year of school left. paying someone $1000s to replace the trans just isnt an option. I saw a 2002 BMW X5 that arrived at the salvage yard yesteday, it has the ZF-5hp24 trans, I can pull that for about $120 and some elbow greece, but there is no gaurentee it works, although they do offer returns on parts that dont work. I might drop by there this weekend and take a look at it.
 

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I ordered some redline MT90 gear oil which is GL-4 approved.
You should only use Castrol BOT 26 FMB 1 75W-90 in the NV225 transfer case, as the friction modifiers meet the requirements of the Torsen centre-differential and the range-change synchroniser cones. It’s stupidly expensive, but you only need 1 litre.

I have experience rebuilding engines but rebuilding an auto trans is beyond my skillset
The 5HP24 is very straight-forward. Much easier to rebuild than an engine.

I saw a 2002 BMW X5 that arrived at the salvage yard yesteday, it has the ZF-5hp24 trans
The BMW X5 transmission does not fit the L322

Phil
 

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Discussion Starter #34
The 5HP24 is very straight-forward. Much easier to rebuild than an engine.

Phil
that could be a possibility, although a rebuild kit is significantly more expensive then sourcing one from the yard. being a broke college student, step one is to source a used one then swap it, if that fails then a rebuild is in order. there are a lot of BMW's with the same transmission, is the bolt hole arrangement different, or is there something else I'm missing? I've swapped a trans before so that wouldn't be a huge issue for me. would have to rent a local garage though. it was pretty hard finding some GL-4 gear oil locally, none of the auto parts stores carry it, stateside we have amsoil and redline which both make a full sythentic 75W-90 gl-4. I have heard the solvents in GL-5 can really mess up your transfer case, I have a feeling my current transfer case could be shot, I guess we will find out if it shifts once the new transfer box motor arrives, should be here on the 30th.
 

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The E53 and the L322 use different transfer boxes (NV125 and NV225, respectively) so the back end of the two transmissions is different. You have to fit a 1058 000 032 model in your Range Rover. The BMW E53 4.4i uses a 1058 000 029 and the 4.6iS uses the 1058 000 034.



Phil
 

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Discussion Starter #36
I see, so I will have to pull from a 2002-2005 L322. once a week I check the yards online, just a matter of time until I find one.
 

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Discussion Starter #37
changed the fluid today on the transfer box. was pretty dirty, not sure if it has even been serviced. does not look like metal, just a burnt black fluid.

287365
287366
287367
 

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changed the fluid today on the transfer box. was pretty dirty, not sure if it has even been serviced. does not look like metal, just a burnt black fluid.
In post #33 RRPhil gave the correct oil to use for this transfer box and you really should follow his advice. Anything else may cause serious damage and end up costing you or the next owner a lot of money to put right.

Many oils claim to be suitable for specialised applications and may appear to be ok initially but the damage it does will only become apparent many miles later.
 

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Discussion Starter #39
for the transmission, is this a proper rebuild kit?

there is also another kit that comes with the filter:

the second kit is $100 more.
 

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Discussion Starter #40
In post #33 RRPhil gave the correct oil to use for this transfer box and you really should follow his advice. Anything else may cause serious damage and end up costing you or the next owner a lot of money to put right.

Many oils claim to be suitable for specialised applications and may appear to be ok initially but the damage it does will only become apparent many miles later.
287519


finally found a site that has all the correct fluids, rimmerbros. hopefully this transfer box motor fixes my 4th gear failsafe issue, if that's the case I will go ahead and service everything. I am hesitant putting more money in this vehicle especially if it is in fact a transmission issue, from what phil was saying, if that O-Ring seal was the problem I would be going into 5th gear. just knock on wood, I checked the tracking and the rebuild transfer box motor will be here on july 2nd. I'm still checking the salvage yards for a tranny but at this point, if I have to rebuild it that would be the most cost effective route besides finding a used one.
 
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