ECUs and Present day cars

[Andrew S]

My ancient but beloved AU obviously has an ECU, but do modern cars still have this component?
Would my friends' 2014 Mazda still have one or has the technology now been superseded ?

[EVL BOS]

Nope modern cars still, have them

[Andrew S]

Do they still lose their memory when the battery is disconnected?

[Xauterus]

No. Unless you are trying to reset learning functions. The ecu is a generic term like pc. They are improving the whole time. Better emissions and power etc

[simon varley]

all modern engines are computer controlled. In fact all modern cars have an interlinked network of electronic modules controlling everything from the engine to the door glass. They all talk to each other, and there's no knowing what you can affect. We took the rear seats out of a car the other day, and the boot latch stopped working!

[keithedel]

current model landcruiser sahara diesel has 37 ecu's, im not kidding

[b2tf]

Originally Posted by Andrew S

Do they still lose their memory when the battery is disconnected?

None of them ever have? And as for 37 ECUs, I think you are referring to the CANBUS system where it doesnt have a single "ECU" as such, but rather it has various smaller ones tasked with single processes that all communicate.