Location of the ECU in the Grenadier.

[Voader - Oudersopzwier]

Hi,
Has someone any idea where the ECU is located In the Grenadier?

Thanks,

 

[DenisM]

which ecu?

 

[AnD3rew]

Hi,
Has someone any idea where the ECU is located In the Grenadier?

Thanks,

There are multiple, 30-40, but no, don’t know where they all are.

 

[Voader - Oudersopzwier]

Ow, so not like in my defender that there is one central unit?

 

[Cheshire cat]

I expect there is just the one 'brain' with possible outlaying slave units taking care of a few specific tasks. Never heard of a vehicle having 30-40 ECU's. ECU will likely be under the bonnet or under the rear seat.

 

[Eric]

I expect there is just the one 'brain' with possible outlaying slave units taking care of a few specific tasks. Never heard of a vehicle having 30-40 ECU's. ECU will likely be under the bonnet or under the rear seat.

A modern car has usually in excess of 25 ECUs. My Fiat 124 spider has recently had 26 of them flashed

 

[alvan]

Just to get close... the software upgrade involved five ECU and some of them five aren't, in any case a 'central' unit.

 

[Cheshire cat]

As Eric said. See attached.
I stand corrected.

 

[bimmerteck]

I expect there is just the one 'brain' with possible outlaying slave units taking care of a few specific tasks. Never heard of a vehicle having 30-40 ECU's. ECU will likely be under the bonnet or under the rear seat.

There was a rather brief period that auto manufacturers moved this direction, the idea was quickly found to be infeasible as more systems required computer control and control modules started to be located by where they best served to shorten the many associated wiring harnesses. Now many local modules communicate via the shared can bus.

 

[Voader - Oudersopzwier]

Okay, thanks for the answers. That gives me an idea how it works. Maybe a bit naïve from me to think that a modern car is still working as my 2007 defender. Thanks,

 

[Jean Mercier]

Okay, thanks for the answers. That gives me an idea how it works. Maybe a bit naïve from me to think that a modern car is still working as my 2007 defender. Thanks,

To be honest... I also thought it was one "computer" on one car

 

[AWo]

Ow, so not like in my defender that there is one central unit?

Since Tdi there was one first, with the introduction of the Td5 there erer two.

AWo

 

[AnD3rew]

Ow, so not like in my defender that there is one central unit?

Depends if you are talking old or New Defender, old Defenders may just have an engine one. New Defenders will have more like 80-100.

 

[AnD3rew]

I expect there is just the one 'brain' with possible outlaying slave units taking care of a few specific tasks. Never heard of a vehicle having 30-40 ECU's. ECU will likely be under the bonnet or under the rear seat.

Most modern cars have an average of about 80, INEOS claims to half about half of most modern cars so I assume something like 30-40.

 

[anand]

There are multiple, 30-40, but no, don’t know where they all are.

Actually, 14 if memory serves me correctly

 

[DaveB]

Most modern cars have an average of about 80, INEOS claims to half about half of most modern cars so I assume something like 30-40.

New Defender website braggs that they have 89 CPU's

 

[DesertGecko]

New Defender website braggs that they have 89 CPU's

And that's a good point too.. We're all using he term ECU. but ECU is Engine Control Unit. It's reasonable to want to know where the primary ECU is. Most of the other computers which people call ECU's do other functions like lights etc. Of course that's not to say that there aren't dependencies between them all.

 

[stickshifter]

ECU can stand for Engine Control Unit or Electronic Control Unit. Modern cars often have 80-150 electronic control units, but most of those are not engine control units.

Because of the confusion, it is my understanding that engine control units are usually referred to as Engine Control Modules (ECM).

 

[bimmerteck]

ECU can stand for Engine Control Unit or Electronic Control Unit. Modern cars often have 80-150 electronic control units, but most of those are not engine control units.

Because of the confusion, it is my understanding that engine control units are usually referred to as Engine Control Modules (ECM).

In the Ineos it may well be labeled DME(Digital Motor Electrics) or DDE(Digital Diesel Electrics) due to the BMW drivetrain.

 

[Tazzieman]

Given the panoply and plethora of software glitches , I'm wondering if mine has O.F.U.

The term harks back to med school days ; there was this guy (now uber respectable) who, shall we say, enjoyed a drink at parties.
The first time I met him the day after a very heavy night he was groaning and saying "Ohhh , I'm OFU"

I later asked what that meant and was told "One Fked unit"