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I have a problem with my 2007 Range rover Sport (RRS) HSE. The tire pressure lights come and go off, the parking brake light is on, and I get this message "vehicle fault, system shutting down (at times when I drive; the doors would unlock, any electronic --radio, GPS-- goes dead, hazard lights come on but car continues to run and the system eventually comes back after 1-3 minutes). I took it to a RRS dealer and he said, so many faults were coming up, making it difficult to pinpoint the problem. I suspected the instrument cluster (IC) is bad (based on my reading) and the RRS dealer told me if that is the problem, a new IC needs to be made in the UK specifically for the car and the mileage. I have question, has anyone every changed an IC in the US using a used one? Is there a mechanic you would recommend around MI, IL (Chicago), MN, and WI area? The dealer told me that a used part will not work for a RRS. Thanks
 

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Did they run a diagnostic on the system or did you just go there to pick their brain?

As far as I know you can install a used cluster but you must us a JLR Scan tool in order to write the VIN, Mileage and Service data into the IC Module. That means you'll need to find a dealer willing to do that or an independent with the JLR Tool.

The IC is intentionally hard to service to prevent scamming odometers and rolling them back and to make theft more difficult. Most vehicles are difficult to service when they have IC issues and most Euro manufacturers route a ton of modules through the IC as part of the CAN communication network.
 

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Hello DriverGT5,

Thanks for your response. They did a diagnostic scan and they got multiple faults (some of which the dealer said did not make sense; for example: headlamps, AC, etc). Now I have another problem. HDC fault message is on and the car would not start. Thanks
 

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Did they run a diagnostic on the system or did you just go there to pick their brain?

As far as I know you can install a used cluster but you must us a JLR Scan tool in order to write the VIN, Mileage and Service data into the IC Module. That means you'll need to find a dealer willing to do that or an independent with the JLR Tool.

The IC is intentionally hard to service to prevent scamming odometers and rolling them back and to make theft more difficult. Most vehicles are difficult to service when they have IC issues and most Euro manufacturers route a ton of modules through the IC as part of the CAN communication network.
Hello DriverGT5,

Thanks for your response. The dealer did a diagnostic scan and got multiple faults (some of which he said did not make sense; for example headlamp fault, AC, etc). Now, I have another problem. HDC fault message is on and the car would not start. Thanks

Ebbie
 

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Hello DriverGT5,

Thanks for your response. The dealer did a diagnostic scan and got multiple faults (some of which he said did not make sense; for example headlamp fault, AC, etc). Now, I have another problem. HDC fault message is on and the car would not start. Thanks

Ebbie
Alright, so by diagnostic scan I assume they pulled codes but did not run any diagnostic tests.... is that correct?

Testing usually takes a few hours, involved multiple steps and usually costs a couple hundred bucks. Scanning is a 10 minute job and gives you a starting point but really is of very little help.

A valid starting point is the document the plethora of diagnostic trouble codes, clear them all and see which ones come back in a few days or the next time the fault is present. That will tell you what to focus on and what codes are side effects or unrelated. Usually the primary fault will show up first or very shortly after.

If they ran tests and charged you a few hundred bucks the burden is on them to find a correction that will repair at least some of the issues present.

Maybe I missed the "no start" issue but can you describe it more? Does the key turn? Does the engine crank over? Do you hear just clicking?
 

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Alright, so by diagnostic scan I assume they pulled codes but did not run any diagnostic tests.... is that correct?

Testing usually takes a few hours, involved multiple steps and usually costs a couple hundred bucks. Scanning is a 10 minute job and gives you a starting point but really is of very little help.

A valid starting point is the document the plethora of diagnostic trouble codes, clear them all and see which ones come back in a few days or the next time the fault is present. That will tell you what to focus on and what codes are side effects or unrelated. Usually the primary fault will show up first or very shortly after.

If they ran tests and charged you a few hundred bucks the burden is on them to find a correction that will repair at least some of the issues present.

Maybe I missed the "no start" issue but can you describe it more? Does the key turn? Does the engine crank over? Do you hear just clicking?
Hello DriverGT5,

Thanks again for the information. You are correct, the scan was just 10 minutes. They did not invest a lot of time to find out what the problem could be (they did not charge for the scan). I plan to take it next week to mechanic that specializes (that is what they say) in range rover for full diagnosis/trouble-shooting.

With regards to the "car does not start", yes the key turns. All I heard was a click. Last month a brand new RRS recommended interstate battery was installed. So, I don't think it is a battery problem. The starter was also checked and confirmed to be in good condition. I am not sure what caused the car not to start last week but it started the next day. I haven't driven it since then because I am afraid it may abandon me some where. I plan to take it to a garage in Minneapolis next week. Thanks again for your concern.
 

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this is also happening to my 06 RRS that i'm fixing up. medium speed can bus going down, system shut down and no-start, with hazards flashing.

TONS of codes all over the place, from every computer on the car, including but not limited to:

LOST COMMUNICATION WITH XXXX
IMPLAUSIBLE DATA FROM XXXX
SOMETHING TOO HIGH
SAME THING TOO LOW

i received codes similar to this from every computer in the truck. when i key the ignition on, i immediately get the HDC fault, sometimes an EPB fault (despite it working fine), and when the truck is starting, i'll get suspension errors too IMMEDIATELY after the compressor fires.

all of my studies have led me to believe that either a computer is on the fritz, or the (semi-common, outlined online) instrument cluster is loose or the socket needs repair.
i plan to pull it tomorrow and inspect.

i have a brand new, top line battery
i have replaced brake switch
i have replaced brake lamps
 

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Discussion Starter #9
this is also happening to my 06 RRS that i'm fixing up. medium speed can bus going down, system shut down and no-start, with hazards flashing.

TONS of codes all over the place, from every computer on the car, including but not limited to:

LOST COMMUNICATION WITH XXXX
IMPLAUSIBLE DATA FROM XXXX
SOMETHING TOO HIGH
SAME THING TOO LOW

i received codes similar to this from every computer in the truck. when i key the ignition on, i immediately get the HDC fault, sometimes an EPB fault (despite it working fine), and when the truck is starting, i'll get suspension errors too IMMEDIATELY after the compressor fires.

all of my studies have led me to believe that either a computer is on the fritz, or the (semi-common, outlined online) instrument cluster is loose or the socket needs repair.
i plan to pull it tomorrow and inspect.

i have a brand new, top line battery
i have replaced brake switch
i have replaced brake lamps
reverendALC,

Let me know what you find out. Thanks
 

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So I pulled out my IC, and the truck starts. It’ll still go into crash mode, but with some random fussing with the IC it’ll come back on.

I cleared the codes in all 15 ECUs (well I tried) but two or three of them won’t clear. It says “failed.”

I don’t think that’s the entirety of my problem, but it definitely seems related.

I pulled 41 codes from the 15 ECUs, and sooo many of them were “lost comm with IC”
 

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Discussion Starter #11
So I pulled out my IC, and the truck starts. It’ll still go into crash mode, but with some random fussing with the IC it’ll come back on.

I cleared the codes in all 15 ECUs (well I tried) but two or three of them won’t clear. It says “failed.”

I don’t think that’s the entirety of my problem, but it definitely seems related.

I pulled 41 codes from the 15 ECUs, and sooo many of them were “lost comm with IC”
I am not sure I understand what you mean by "pulled out my IC". Did you replace it? Thanks
 

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No, I didn't replace it, I removed it... inspected it, and resoldered the harness socket onto the circuit board (i had read somebody else solved their problem doing this)

It's still acting up. I am contemplating sending it off for repair, i recognize that it's a crap shoot but i cannot locate any other fault with any component of the MSCanBus.
 

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Are you sure the battery replacement didnt result in bad terminal connections? My 2012 RR had the exact same codes(+a couple more) and was a battery problem. Maybe the terminals are just loose or connections to the terminal. When I put my new battery in I tried to install the red green corrosion resistant washers and the terminals wouldn't tighten up with them in place. Removing the washers under the terminal allowed it to sit further down on the battery post, resulting in a firm connection. My Gap IId tool shows voltage while connected. It has to be over 13v for systems to act normal, in my limited experience.
 

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i wish it were that simple, but the battery replacement happened while troubleshooting these issues.

i finally sorted out my air suspension woes, and i'm down to a consistent number of codes... i get exactly 20 every time
a bunch of comm errors from the IPC
a single error from many other computers saying "lost comm with IPC"

i have sent my IPC off to turner diagnostics in the UK. shipping there and back will cost more than the repair, but i'm confident this will fix my problem as i've inspected and tested the majority of connections on the MS CanBus.

https://www.turnerdiagnostics.com/specialist-services/land-rover-range-rover-instrument-cluster-repairs.html

they seem to have a pretty big understanding of the issue
 
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