EMDS also sells a cable for Model 3. I haven’t used this one as I don’t own a Model 3.
The CAN bus connector in a Model S can be found under the MCU’s main screen in the vehicle. You need to pull down the ‘chubby’ and there you will find the connector:
Cable connected to my Model S85
I am using the TM-Spy app on iOS for reading the values on my iPhone.
Screenshot of TM-Spy on iOS
For Android there is Scan My Tesla which also seems to be a very good app. I don’t have an Android device, so I was not able to test it.
I was mainly looking for these values:
Usable Full
DC Charge Total
AC Charge Total
After 253.543km of driving my battery has 75.6kWh of remaining capacity where this was ~81kWh when it was new. (The 85kWh battery was actually a 81kWh battery….)
Tesla also throttles a vehicle’s SuperCharging capabilities after more than X amount (I don’t know the exact value) of DC charging. My car seems to be affected as I SuperCharged a lot.
Charge Total is not a total sum of AC+DC, but from what I’ve read early firmwares did not count AC and DC charging in different values.
Interesting information though! I encourage everybody to use this information to gather more information about their vehicle’s state.
Tesla’s vehicles are awesome. I own a S85 from 2013 and a S100D from 2018. I’ve driven 260.000km and 70.000km with these two vehicles and I love it.
There is however a design flaw in the early Tesla models which can become a very expensive reparation if not performed in time.
Version of of the MCU (Media Control Unit) which was installed up until early 2018 in Tesla S/X runs and is a ticking time bomb.
The problem is the Flash Memory (eMMC) which holds the Operating System of the computer. This wears out over time due to writing data to it.
Writing happens when you use the car. It caches Spotify, Google Maps and many more things. Even when the car is parked the MCU stays running and writes to the eMMC chip.
Eventually this chip will wear out. Before it does it becomes very slow and this results in the MCU becoming super sluggish, unresponsive, the screen reboots at random moments, bluetooth issues, etc, etc.
Inside of the Tesla MCU1The eMMC chip
A lot has been written about this, so I won’t write to much. Short: Tesla will charge you around 2000 EUR/USD for a new MCU.
I choose to replace this eMMC chip myself and this was a lot cheaper! Total cost was <500 EUR.