J

JamesH180

New Member
Hi everyone,
After a lovely day out with the grandchildren we went back to the Range Rover and my wife tired to start it. We got nothing but a small click from the underneath the bonnet.

I thought, what a plonker I have left the cooler on all day (7 hours) and you have flattened the battery.

I got the jump leads out and charged the battery from another car. This gave the RR life to turn over but it would start up.

I'm not mechanic so I called the AA.

They came out and tried their jumper pack on it but it still didn't fire up. Then he did the disconnection/reconnection of the battery but none of this worked. He then kept saying the orange engine management light isn't coming ever time he turn the key and he was concerned.

He then called his people and looked around the ECU's and fuses. He even took the battery out and looked at the fuses and box behind the battery.

He said there is nothing more he can do so a tow is in order.

Has anyone had this problem before because he thought that I had shorted an ECU out by jumping it. Does sound correct? He also said to me that he could smell burnt electrics.

Thank you for reading this and any help would be greatly appreciated.

James
 
If you put leads on with ign on or didn't follow owners manual-yes possible.

but normally you would expect blown fuses in any surge.

I wonder if it is immobiliser issue
 
Petrol/diesel....model year??

As Fanatic says, you have to jump the L322 to the letter of the handbook and no other way!

Starter solenoid maybe, and depending on model year possible ignition switch issues.

Here is a vid I made for another member showing what lamps should illuminate during ignition on and startup of the 2002-2005 V8 models.....

http://m.youtube.com/watch?v=aL9DD0p-eyM

If the EML isn't illuminated, that could indicate an immobiliser issue, but I'd have to check RAVE on that.
 
Sorry it's a 2005 2.9 diesel. I just jumped it the old fashioned way. It's being towed back as we speak so I'll look at it again in the morning.

Thank you for the replies
 
JamesH180 said:
A friend has just called and he thinks it is to do with the key fob and the BecM codes being out of sync.
Click to expand...

Nope...the system is different, I think he is talking the P38 system which regularly looses sync, but more often it is the BeCM and the Engine ECU...although the P38 keys can sometimes lose their marbles too.

On the L322, the Central Locking and the imobbiliser are two completely independent systems.

The CL is controlled via the BCU (Body Control Unit) - when you press the fob button the BCU checks the received code and if correct opens the locks and wakes the immobiliser ECU from its slumber.

The Imob ECU then waits for the key to be placed in the ignition switch which has a coil around it, this coil induces a signal in the fob and this signal is received by the imob ECU, if this code is correct it unlocks the steering lock, and as long as the gear selector is in P or N, it tells the Engine ECU to energise the start solenoid and bingo.

Once the car has started the imob ECU then sends a new code to the key for the next time!

If your steering lock unlocks when you put the key in the switch, this would mean the Key and Imob ECU are synced to each other and as long as you can turn the key, this means all is well with the immobiliser system in my eyes and your culprit could be the starter motor or solenoid!

Maybe diagnostics could give an insight!
 
Last edited:
JamesH180 said:
The engine is cranking over but just won't start.
Click to expand...

Well that's a bit different than a '...We got nothing but a small click from the underneath the bonnet...'

Could be fuel pump, they have a habit of failing on the earlier models so it could be an issue on the 2006 models too....

Maybe it is time for diagnostics...a diesel needs 3 things, heat, fuel and compression.

Could be Glow Plug circuit playing up, or low fuel pressure...

Check you have a good strong battery as alongside the 3 major items above, they do need a good cranking speed....
 
Saint.V8 said:
Well that's a bit different than a '...We got nothing but a small click from the underneath the bonnet...'

Could be fuel pump, they have a habit of failing on the earlier models so it could be an issue on the 2006 models too....

Maybe it is time for diagnostics...a diesel needs 3 things, heat, fuel and compression.

Could be Glow Plug circuit playing up, or low fuel pressure...

Check you have a good strong battery as alongside the 3 major items above, they do need a good cranking speed....
Click to expand...
The M57 is direct injection so should fire even if the glowplugs dont work with current ambient temperatures. Cranking speed is critical though.:)
 
my bets on the fuel pump if the engine is cranking,did the aa man check if theres was fuel getting to the engine?td6 is renownd for the secondary fuel pump to fail.

op get this checked first, its located under the inspection pannel by the rear passenger wheel under the car
 
clarkie said:
my bets on the fuel pump if the engine is cranking,did the aa man check if theres was fuel getting to the engine?td6 is renownd for the secondary fuel pump to fail.

Op get this checked first, its located under the inspection pannel by the rear passenger wheel under the car
Click to expand...
+1
 
fuel pump maybe

or if theres burning i suspect a fried ECU from a funny jump start....

dig deep £££
 
The AA man said he could hear the fuel pump working but he didn't check the other one.

I couldn't smell burning when he mentioned it.
 
We checked all the fuses and they are fine, we took the battery off and charged it and that is fine. So we took the fuel line off the fuel filter and there is no fuel pumping through.
 
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