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Hi Jason I have a 2004 Disco 2 V8 and had a similar problem to what you have described and I was going to go down the route of BCU replacement. I borrowed a Nanocom unlocked for V8 and found this to be excellent, however my problem was actually corrosion in a connector in the LHS front door...

Hi guys I thought I would let you know that the Disco has behaved faultlessly over the last month. In summary I had a water ingress problem - fixed by resealing windscreen. Found a connector which had been saturated with water - dismantled it cleaned the contacts, protected it with electrical...

Hi all I just thought that. I would report that I managed to track down a replacement solenoid via EMMETS of Colon. This specialist breaker has access to a great range of parts and is quick and reliable. So my ACE system is working again after spending £50 and 2 hrs work. It easy when you know...

Hi Jason You are right of course . I will put the Landy in the barn and rip out the old fuse box. Thanks for the encouragement. Mike

Hi Jason Fuse boxes have arrived but the Landy has not misbehave since!!!. I am planning to inspect the connections to the gear box controls for any corrosion first but wait till the weather calms down.

Thanks guys. I will keep on hunting. Have also ordered two replacement fuse boxes so I will change these over if the the fault persists.

@sierrafery any thoughts on above? Well I dismantled the gear selector possition indicator connector - looks as clean as a whilstle and the switch looks relatively new - previous owner said it had been replaced. I sprayed the connector contacts with contact cleaner, polished the connections...

Have reviewed some threads on gearbox switch so am going to clean gbx switch connector - I am guessing that this is a sealed unit so no point in spraying WD40 or contact cleaner onto the switch. Will also check harness for any wear when underneath the Landi and transfer box switch.

The Discovery ran fine all week - even wading through 2 ft of flood water without any problems. We did a good run in it on Friday night then Saturday morning when I went to move the Disco - would not start - same symptoms. So she is being considerate as to when she wont go. I jumped out R2 to...

Well when fault last occurrd I did not get the symptoms described by Dippypud. Ie no dash leds once in possition 2. I think the fault may be more prevalent when the battery is at 12.3volts or below. I have recharged the new battery and the fault has not reoccured since Sunday night. I spoke to...

Thanks guys will let you know how I get on.

Fault reoccurred today. I tried Sierrafery's suggestion of replacing starter relay with R3. No improvement. I jumped out the starter relay with my trusty paper clip and the engine ran fine. I pulled the fuel pump relay with the engine running and the engine died in 2 seconds. Stopped the car...

I have now cleaned the corroded connector with contact cleaner and gteased it with electrical grease. Still working. Will try R3 swap if it fails again. Thanks for the support. Other than this persistent fault my ACE is back working and currently have no other faults .

Fault reoccurred today. I started the car, drove for 2 mins, parked up for 3o mins without locking the car. Get back in ignition came as normal then would not crank. Relocked car and retried - still no luck. Popped the starter relay out and started with paperclip. Car ran fine and will now start...

Have also bought contact cleaner an electrical grease.

Still working. Did about 30 miles in it today. carrying tools and a tow bar just in case.

Thanks for the advice guys. All alarm options had been disabled. However I have now mhad a breakthrough. I am not certain if it is a permenant fix, but the car is running again! I used the Nanocom to test everything and the only consistent fault was the serial link. I restored all security...

Also key fob works locking and unlocking the car.

Hi Guys. I have diagnosed the fault using Shims Nanocom. Was able to run fuel pump using test function. The engine warning light is lit on dash ( Should this stay on if engine not started?)and ecu reports. P1668 anti theft serial link fault signal too low once and too high 3 times. Disabling...

Thanks Sierrefery I agree with you, Now the systemematic task of working through the wiring diagramme with a multi meter and Shims Nanocom. I am sure that this will give me hours of entertainment . The only thing I don't underdstand is why the voltages reported on my scanner at the BCU were...