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Discussion Starter · #1 ·
Hey everybody. Recently had something weird start to happen. Started my 2010 LR4 today, all was well. After a few seconds, my fuel gauge went blank and got a low fuel warning. Seconds before it said 229 miles to empty which is correct. THEN after a few more seconds, I got a suspension fault and only normal height was allowed. I’ve searched but couldn’t find anything relating to both of these popping up together. The fuel gauge works so it seems like a computer issue?

The other day I removed the driver seat to repair stitching on the bottom part. The only thing unplugged was the electronics for the seat. I unplugged the battery for a minute then hooked it back up and all was well again…for a few seconds.

Im hoping for an answer other than “hook it up to a reader.” I have RSW software that supposedly works for the LR4 but I don’t have the OBD2 reader for it. Any guidance is appreciated.

Battery is from 1/2020 and everything works when battery is disconnected then reconnected for about 10 seconds.
 

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Nonetheless, have you tested the battery? This sounds like classic low voltage
 

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Have you replaced any light bulbs recently?
 

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Discussion Starter · #5 ·
Have you replaced any light bulbs recently?
Actually, yes. One of the peanut bulbs in the front headlight was replaced.

Battery and alternator tested fine.

About a week ago I took it through some water that was deeper than expected. Engine ran rough after but it cleared up overnight. No issues for a week after that.
 

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Interesting. Do you have (or have access to) a multimeter?

was the water over the lower door line?
 

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LOL. A headlight-depth-wading would’ve been my goto suspect for an electrical issue.

do you have standing water beneath your door sills? The IPC grounds in the driver kick and there are many splices down there that aren’t water tight. Also the TCCM behind the battery under the hood can cause wackiness that affects the EAS when wet.

I think at this point, you’d be better off buying a a foxwell or other economy LR scanner and getting more information
 

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Discussion Starter · #10 ·
I have the RSW software but I’m waiting on an OBD2 reader to come in the mail to use it. Because of my work schedule I haven’t been able to do any further digging. I’ll end up ripping up the carpet on both sides as well as pulling the JCB out and checking the rear connections.
 

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Discussion Starter · #12 ·
Here it is. Ran the RSW software and found out I do
in fact have 2 separate issues. 1st is the fuel level sensor circuit. There’s a TSB for it to replace the connector and splice the wires together at the top of the fuel tank.

2nd is my rear valve block is leaking. Easy rebuild.

Called LR Richmond and asked about fixing the TSB and attempted to have them cover the cost. That didn’t work out for me. However, I was informed that there was a pending recall on the gas tank fuel sending unit seal. Letters will be sent out soon for the recall and since they have to drop the tank to fix the recall, all I have to do is pay the $2 for the splice connectors. Advice received by service writer, “use your odometer and top off often.”
 

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Lol. At least there’s light at the end of the tunnel now
 

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Discussion Starter · #14 ·
Solved the issue. A few weeks ago we had heavy rain. Sunroof clogged=flooded floorboard. Lights galore. Thought it was flood damage causing the lights so I took it to a shop and filed an insurance claim hoping to total then buy another LR4. Diagnosis says water didn’t cause the lights, a wheel speed sensor was causing it. All of this and the fuel tank level is still not working. Anyway, because they wanted $100+ for a $25 Bosch speed sensor, I decided to fix it myself. When I went to unplug the old sensor, the entire connector broke off of the harness. Look at the harness and there are FIVE OTHER BROKEN WIRES.

Removed the spare, got my soldering gun, then got to work. Couple hours later after they all got soldered back up, no lights, no codes, air suspension raised as normal, and my fuel level is registering on the cluster.

I’m back baby.
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