Thread: TD5 ECU (non-flashable)

I understand that its not compatible you need an NNN500020

Thanks Djam 1,

the non-flashable is a MSB prefix, the later flashable ECU's are the NNN prefix. I was of the impression that the defender and disco both had the MSB ECU until it was replaced with the NNN ECU in 2002 ish. Am I mistaken, which would make the Defender and Disco not compatible as a straight swap.

cheers Mark

i have a non flashable sat in the shed (spare) after recently fitting a flashed nnn.


the auto one might work but would suspect will need to switch off the auto inputs (nanocom) for it to work in a fridge. someone more savy will be along soon to confirm.

they are not compatible 'straight out of the box'.

Jon is spot on.

The disco unit will make your gauges run backwards too....

Try and get hold of a NNN ecu (flashable) with a xxxx20 number

Skuilnaam

Originally Posted by skuilnaam

Jon is spot on.

The disco unit will make your gauges run backwards too....

Try and get hold of a NNN ecu (flashable) with a xxxx20 number

Skuilnaam

I think you misunderstood Jon.

NNN000120 or NNN500020 will work with both Manual Td5 Disco and Defenders. The only caveat is the correct map file for the vehicle must be loaded, which is easily done with a Nanocom.

Manual and Auto ECU's aren't interchangeable.

That must be it then.

Originally Posted by OffTrack

Manual and Auto ECU's aren't interchangeable.

Nope that wasn't it!

If manual into Auto correct. Auto ECU into manual is fine.

Yes variant file must be correct for vehicle type otherwise 'gauges work backwards'

The other benefit to the Defender owner fitting a NNN ecu is the ability to wire its cruise control up to work.

Skuilnaam