ECU not includes, only A Bundle of Wires for ECU 1537264-00-B  !!!
 
A DIY retrofit for enabling CCS1/CCS2 adapter capability on your older Model 3 (pre-Oct 5, 2020 NA Model 3) when using a Gen4 ECU 1537264-00-B.  Also needed to use NACS plugs on non-Tesla DC fast chargers.
 
If you have a Model Y, you do not need to order this. Same for Model 3's made after Oct 4, 2020.
 
If you are not sure what all this means, please read the info located here.
 
"A Bundle of Wires" will allow charging using all types of DC fast chargers (DCFC) available in NA including NACS, CCS1*, CHAdeMO*, and Superchargers,  something no other EV can offer. It consists of two main parts - a high quality printed circuit board protected by heat shrink tubing and a wire harness. We are calling this version "A Bundle of Wires with a Board".
 
 
* when using the applicable Tesla adapter (CHAdeMO or CCS1/CCS2)