I had a most unfortunate electrical malfunction on my 2007 Land Rover LR3 (70k miles just had 67k service done)-
In Route north for the 4th my LR3, which had been running like a top no issues, began to experience various ECU shutdowns, Ventilation, Audio etc. I was able to clear the Faults but when I stopped and and tried to restart- Nothing-
I looked at the fault codes via the GAP Tool and got many many of them one in particular was scary-
U0167-00 (2A) Lost communication with Vehicle Immobilizer - but the immobilization part worked- vehicle was immobilized on the side of the highway. I was not able to clear many of them which is quite ****ty frankly from the GAP Tool-

Again- there had been zero issues before. I was able to get it running and return home. I replaced the battery just out of caution and still nothing- no start, Air Suspension in Access mode, steering angle fault etc.

What in gods name is happening??

 

What are the other codes?
Have you tried a second key to start it?

Let us know.

Jeff

 

A second key is a good idea. If the faults dont clear, that generally means they are real. That is was fault codes are after all.

Do you have any wet carpeting issues?

Has the battery light ever come on, meaning could the alternator be on the way out?

 

I really feel like you need to follow-up on a question like this. If i'm gonna ask the world' for help , i'm gonna put the solution back out to the world when I find it.

 

I'm guessing the OP figured it out. BOY would I love to know the answer.

 

Failing cluster would be my guess since that is where the immobiliser is.

 

Yeah, after I pull and check my CFB and find the body ground and clean it, I will be removing my cluster and inspect the Cluster connector and wiring harness.

Is there a way to ohm out or other electrical trickery to see if the immobilizer is bad?

 

cyber - really good video on the very basic cluster issues. I may actually reflow mine just for the sake of it. I do computer board repair all the time, so this will be an easy one.

 

Yeah, I saw that. Was thinking of picking up a basic iron and some flux for the boy while I am out here.

 

I have the same problem and I am working through it on this THREAD

Basically I am tracing all the wires between the instrument cluster and the engine control module.

I am about ready to give up and buy one of those expensive bidirectional diagnostic tools with a oscilloscope so I can start to understand the CAN BUS system better ( I may also increase my attendance to some of the You Tube University can bus classes)
To save time with the link, the wiring path is:
ODB socket to
instrument cluster-
steering angle sensor-
air suspension module-
parking brake module-
rear diff control (if installed)-
center console switch (terrain response)-
restraint control module-
speed control module-
engine control module-
transmission control module-
transfer box control module-
afs control module-
abs control module-
The air suspension module; parking brake module; engine control module are wired in series so if one of these fails, the whole string will most likely fail.

Hope that helps

Jeff