ECU - Electronic Control Unit

In terminology of VW-group it's any electronic device, which has been carried out some logic function. Sometimes it looks like nonsens - even simple relay can be called ECU.

The coding of Electronic Control Unit used for explain the ECU where it is and what "neighbours" does it have. Very often on modern cars the coding is crossed with adaptation.

Adaptation of the Electronic Control Unit serves to explain to the ECU with whom and how to talk (If we have started to speak allegories) and serves as storehouse of various adjustable parameters. ( part of memory in the Control Unit which can be changed via internal software )

Measured Values Blocks ( MWB ) – various parameters being inbound or calculated. Considering to value of MWB Electronic Control Unit, trying to "control"... Using of MWB allows you ( if you know the basic parameters ) to find out "close to boundary" or temporarily arising ( intermittent, sporadic ) malfunctions and many other useful things at competent use.


J104_8P_45_____1_0203_21_Messwerteblock.htm
J104_8P_45_____1_0303_21_Kontrollampen.htm
J104_8P_45_____1_0508_21_Adapterkabel_1598_49.htm
J104_8P_45_____1_0508_21_E256.htm
J104_8P_45_____1_0508_21_E492.htm
J104_8P_45_____1_0603_21_Messwerteblock_MK70.htm
J104_8P_45_____2_0508_21_Datentraeger_AB2_Cabrio.htm
J104_8P_45_____2_0903_21_Datentraeger_AB2.htm

Data sticker with production numbers

 

Data sticker locations:

J Audi Service Booklet

J Label in spare wheel well in luggage compartment

or

in ELSA enter vehicle ident. number and start enquiry and in dealer portal call up PR number

 

-1- Identifying number on sticker in spare               wheel well 23- 4 corresponding to 234

-2- Model year (5=2005, 6=2006 ...)

-3- Manufacturing plant

-4- Serial number

-5- Identifying number on sticker in Audi Service Booklet

     in following format 2345718.

-7- PR no. hill-start aid (Hill Hold Control, HHC)

-8- PR no. tyre pressure monitor

-9- PR no. basic engine

-10- PR no. running gear

-11- PR no. brake system, front axle

 

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