Thread: Suspension fault on D3

Yes, the Hard Reset includes disconnecting the battery, but per below, there are a couple of other steps.

In brief, to start the hard reset process, open the hood but close all doors and let your 3 go to sleep - no radio display etc.
It is often a good idea to have a window rolled down and the key in your pocket.

Disconnect the ground battery terminal from the battery.
Disconnect the positive battery terminal from the battery.

Connect the negative cable to the positive cable. (NOT the Battery.) You will need a short length, (a foot or so), of light gauge (14 to 18 gauge, AWG, stranded copper), wire to do this as there is not enough slack in the two cables for them to touch each other.

Hold them together for about a minute or so, (some say 5 to 10 minutes); you are discharging memory modules within the engine computer and elsewhere.

Reattach positive terminal to the battery.
Reattach negative terminal to the battery.

Start engine; hopefully error messages gone.
Reset time on the radio - note that the station presets are still there. Nothing much else gets messed up.

If the error codes stay away for a week or so, the concern may just have been a Land Rover thing.

This is a link to a thread in disco3 re hard reset.

http://www.disco3.co.uk/forum/topic19547.html

Got to spend some time with the beast today, being Saturday, and checked out all the obvious... there are no less than 4 fuses related to the air suspension on the D3 (1 in the glove box compartment fuse box and three in the fuse box under the bonnet). I checked all and all were good until i got to the yellow 60 amp fuse, bottom row second from the right (see attached picture). This fuse had blown. As I had no spare, I removed the fuse. The clear plastic cover on the fuse unclips and removes easily. With a pair of pointy-nose pliers i moved the burnt out fuse ends together so they were touching, replaced the cover and reinserted the fuse. Started the engine - fault gone!, compressor started its normal routine and suspension is now active again. Not to get ahead of myself I drove into Repco to get a fuse, took to fuse out again to show the guy. Long story short , they had none in stock so had to order. The fuse is $8.30. Reinserted the fuse again, started the engine, still all good! drove about 50-60 kms today to do shopping, picking the kids up etc, stopping and starting engine several times in the process and still all good!! I hope this this is all it was shall keep you posted. Hope this info is also helpful to others who have the same fault message. Cheers, V8 Disco.

A blown compressor fuse is sometimes caused by a sticking compressor relay which causes the compressor to keep running and eventually overheat. Hence it might be worthwhile replacing the relay too.

I'm impressed, not so much at you finding and solving the compressor problem, but knowing that a fusible link could be "fixed".

It never occurred to me that one could unsnap the clear plastic lid on the big fuses and kind of put the fuse back together - what could be called "manual self resetting" and certainly a valuable field fix tip.

I was not surprised however that you could not just go and pick up a replacement fuse at the local parts store. Some time back, I decided to add those fuses, (fusible links), to my parts stock as I discovered that they are not that easy to get ahold of.

Also, even if the fusible links were available at a parts store, I found that the fuses were cheaper at my local Land Rover dealer - running from 3 to 4 dollars each at LR. The part numbers of each size are as follows:

30 amp part number YQG100410L pink in colour
40 amp part number YQG100420L green in colour
50 amp part number YQG100430 red in colour
60 amp part number YQG100440 yellow in colour

Glad to be of help with the fuse fix, another one for the bush mechanics manual.
Thanks also for everyones contributions and further tips, I may get the compressor relay looked at / replaced if it seems to be working overtime and have noted the fuse part numbers. A good Disco day to all! Gary

Originally Posted by V8 Disco

Got to spend some time with the beast today, being Saturday, and checked out all the obvious... there are no less than 4 fuses related to the air suspension on the D3 (1 in the glove box compartment fuse box and three in the fuse box under the bonnet). I checked all and all were good until i got to the yellow 60 amp fuse, bottom row second from the right (see attached picture). This fuse had blown. As I had no spare, I removed the fuse. The clear plastic cover on the fuse unclips and removes easily. With a pair of pointy-nose pliers i moved the burnt out fuse ends together so they were touching, replaced the cover and reinserted the fuse. Started the engine - fault gone!, compressor started its normal routine and suspension is now active again. Not to get ahead of myself I drove into Repco to get a fuse, took to fuse out again to show the guy. Long story short , they had none in stock so had to order. The fuse is $8.30. Reinserted the fuse again, started the engine, still all good! drove about 50-60 kms today to do shopping, picking the kids up etc, stopping and starting engine several times in the process and still all good!! I hope this this is all it was shall keep you posted. Hope this info is also helpful to others who have the same fault message. Cheers, V8 Disco.

Yep you are dead right .I have had all sorts of light coming up along with suspension amber and normal height only.Pulled and replaced all 3 fuses until i checked the yellow 60 amp fuse which was blown. A lot of blogs here tell horror stories about new Compressors and ride height sensors ABS sensors hehe when all along it was a blimy fuse .Not many blogs dose one read that mentions this 60 amp fuse so worth while checkng that .I have had no issues since replacing it . Thats my pennies worth hehe .