User Guide

This page will be filled up with guidelines on how to use and configure CanZE …



For any information about the ELM327, please take a look at the corresponding hardware page.

Getting to the SAE J1962 (“OBD-II”) port

For the Fluence Z.E.

The SAE J1962 connector is hidden in front of the gear selector, just above the USB plug. The bezel can be removed with a bent piece of metal, we recommend using a metal cover from a PC’s expansion ports. Be careful! You can feel, that the bezel is 3 mm thick, and there is a 3 mm wall behind the bezel – get the metal tool in between the two plastic parts and pull strongly. Again be careful where your elbows go when the bezel suddenly releases.

Pictures of bezel removal are here

Video in Spanish of entering the plug “munchas force!”

For the Zoe

The connector is located under the bottom of the area where the lighter is located. The best way to pop that bottom up is using a small, sharp screwdriver and stick it in the soft rubber edge of the bottom panel, preferably on the aft side so any dent is not visible. Just pull it up gently.


>> German instructions



The charging screen offers some insight in the charging process. This is a text screen as it is intended to be used while parked and charging.


  • The following fields that are displayed in addition to the car’s dash:
    Maximum power the charger is able to supply (Available Charging Power kW).
  • Maximum charging power that is accepted by the battery (Max Battery charge/regen kW). If the charger is capable of supplying more than this value, you might want to consider ending the session. The value is mainly influenced by the SOC (when above roughly 70%), very high and very low temperatures.
  • Battery power (positive when charging).
  • The state of charge and state of health, both in percentages of the battery.

A more technical version of the charging screen is available through in the “Technical” submenu.



The driving screen provides extra information while driving. Important information is showed graphically or in huge typeset. Warning: in many countries it is not allowed to hold a device in your hand while driving. Use a suitable mount when you intent to use this screen while driving.


The driving screen provides the following information.

  • The pedal position and torque applied. Torque corresponds to the force the motor needs to apply. Note that this is not equivalent to power. Power is a product of torque and RPM (force and speed). Both are displayed as bar graphs occupying the width of the screen, and ranging from green to red.
  • The real speed. This is uncorrected speed. A car is, by most national laws, required to never indicate less than the real speed. Warning: a safety margin is applied by the manufacturers, to avoid disputes over speeding tickets. This correction is not applied to this display. Use at you own risk.
  • Distance to destination can be entered tapping this line. You can also use the distance doubled for a round trip. It will be updated during the trip.
  • Distance available at destination is the remaining distance in the battery as reported by the car, minus the remaining distance to destination.
  • SOC in percentage. This can be useful to see if the return trip can be made without charging.
  • Maximum charge/regenerate power of the traction battery. The higher, the faster you can charge and the better you can regenerate while braking.
  • Friction braking. This is unit-less red progress bar showing a product of the speed and the pressure in the friction brake system, so showing roughly the power loss during braking.




Firmware downloading is advised by Renault to the dealer when they check in your car, however, it is not certain that the dealer actually applies those updates. The Firmware screen allows a quick overview of the software version loaded in all computers in your car.


Simply start this screen and CanZE will continuously query all 16 known ECUs for their software version. It will also display if that version is newer or older than a reference version (per car type, per ECU) that we keep updated in CanZE. Please report any newer loads (yours>ref in the screen) to us so we can update the reference. Ask your dealer to update to the latest version if CanZE indicates an older firmware version than the reference (yours<ref in the screen).




Many people try to extend range by avoiding friction braking, but the car doesn’t really indicate when friction braking kicks in. Reality is that friction braking starts very early when pushing the braking pedal, but luckily only very mildly. This screen displays the various braking parameters.


The screen is simplified to only three progress bars

  • Requested torque is the sum of automatic coasting electric braking when letting go of the accelerator pedal and the requested torque by actually pushing the braking pedal
  • Applied electrical torque is the total braking torque applied by the motor, leading to regeneration of energy to the battery
  • Applied friction torque is the difference between the first two values. Note that this is a calculated bar. We have learned that the ESC actually works this way, but have not found a field in the data confirming this value.



A heat map is a color representation of many values. It is intended to quickly see values that wander away from a mean value. Cell voltage of all 96 cells in the battery should be roughly the same (within millivolts). Temperature of the cell compartments should not deviate more than 2 degrees centigrade.

Under normal circumstances, voltage differences accumulate and the Battery Management System is constantly evening those differences out by monitoring each cell and loading them slightly different. Temperature differences even out by themselves.


The voltage and temperature heat maps simply state the those values in a square. The square is colored relative to the square’s value, compared to the mean of all values. The neutral color is grey, with a gravity to blue for lower values and to pink for higher values. In essence, you should see a grey, or almost grey map. If certain cells or compartments stick out consistently, there is something wrong.

An algorithm published by Nissan is also applied to the cell voltage values. If a cell sticks out bright red, it can be considered damaged.

You should not use the voltage heat map while driving, as the varying load will induce small but very noticeable and fast voltage changes. As not all voltages are queried at the same instant, this will give erratic color maps.


If your car is equipped with TPMS (mandatory as of September 2015 in Europe), this screen will show you the state of the tyre and and the pressure. To use it you should be driving for a couple of minutes as that will make the sensors in your tyres send out their measurements.

If the state is shown OK but all tyre pressures are 0, you probably have no TPMS equipped car, or the wheels do not have TPMS sensors.

The Tyres screen is still in the experimental section.


30 comments on “User Guide
  1. Andy Fraser says:

    Where can I find a list of current ZOE firmware versions please? Or, is that the figure shown e.g. LBC 0650<751 meaning that my car has an older version?

    • Bob Fisch says:

      You are right, that’s the right figure you are pointing at. The “latest” versions are based on what other users have seen. No official versions …

    • Jeroen Meijer says:

      In addition to what bob said: These ECU modules have hardware versions too, and we haven’t dug deeper into that. Not all hardware versions can take all software versions, so in some cases, our indication that you do not have the latest and greatest is off. I know of a particular case re. the Climate Control unit.

  2. Andy Fraser says:

    That may explain why no updates were showing for my car when I took it for a service recently. Perhaps it would eventually be possible to compile a list of firmware versions relating to different ages of car (my ZOE is 2 years old).

    • Jeroen Meijer says:

      Correct. We now keep a version per car per ECU, but it should actually a version be per car, per ECU, per ECU hardware version. As that is close to impossible to report back to us by end users, we have not gone there yet, but we are thinking of some sort of “phone home” by the app when on the firmware page. *IF* that happens, I can assure you that it will be on demand only, no automatic sneaky uploading of data.

  3. Albino-Zoe says:

    Is there somewhere an explanation for the new screen range? Also gladly a link in a forum on the topic.

    • Bob Fisch says:

      No and the screen is not yet finished .. as you may have noticed 😉

      • Albino-Zoe says:

        o.k. I know … this software is constantly under development, which is also good 😉 But a brief explanation of the current operation would be nice anyway, or rather everything about Github (fesch / CanZE)?

      • Jeroen Meijer says:

        Actually, I propose to kill everything starting the line “Charging” on this page and remove the remainder to a new sub-page in the hardware section “dongle installation”. No app (aap in Dutch means Monkey!) has a user guide these days. Of course one can have an opinion about that, but the fact is, maintaining the app is quite a bit of work and the guide will never be up to date.

        • Albino-Zoe says:

          Yes I know, this problem also have many others, actually all. I just asked here because there is the option 😉
          Perhaps it would be really better to reduce this page to the headline and then your just made your reference => No app (aap in Dutch means Monkey!) has a user guide these days. 😉
          But then, as with others, it remains open on which platform the complete development of the software can be read, or where a user who was not from the beginning, ask questions. Because it is also not feasible to read everything, even with search functions, therefore, the same everywhere is always asked the same, although it has been so often answered.
          Where a user who has not been there from the beginning can ask questions.
          Because it is also not feasible to read everything that has been written since the beginning.
          Also not with search functions, therefore, the same everywhere is always asked the same, although it was so often answered.
          Or you should form a closed group, including only developers and beta testers :-)) 😉

          I know everything is not so easy, wish you continued success, I am new to the topic and totally enthusiastic, continue so !!! thumbs up !


          Zoe R240 (08/2016), CanZE (01/2017), KW902 ELM327 (01/2017)

  4. Atle says:

    Hi, can I use this to reset the TPMS sensors?


  5. Tamara says:

    Hello! Do you know where de OBD port is in the Kangoo Z.E?


    • Tom Warlow says:

      Under a cover, by the cigarette lighter socket in the 2014 model, you’l need a small screwdriver to pry it open.

  6. HansW says:

    Hallo, I want to use the CanZE on the 2018 ZOE Life Model R75 which is only sold in France. This Version is not shown in the menue Einstellungen. Which of the shown ZOE versions may work ?

  7. tobbe says:

    I have not found any description or explanation of the battery parameter given by the app?
    Is there any?.

    What is the meaning of
    “Max battery charge/regen”
    “DC Power”
    “DCDC Load”


    • Jeroen Meijer says:

      1) The maximum power the battery will accept given it’s temperature and state of charge
      2) whatever power is actually drawn from or pushed into the battery
      3) the load factor of the DCDC converter. As far as we know it is a 1kW system, so 100% = 1kW = 80 amps in the 12 volt bus.

      Sorry for the late reply.

      • Tobbe says:

        Thanks for the reply and all the good work
        My knowledge is slowly increasing and I believe that I know the meaning of most of the parameters. But some is still puzzling.

        What is the difference between “Useable state of charge” and “Real state of charge” ?
        “Available energy” + “Energy to full” is seldom equal to the full battery capacity of 41 kWh.
        What is the meaning of “Available energy” ?

  8. Denis Mark says:

    I’ve got a 2014 Renault Zoë which starts charging fine but then after 15 minutes to 20 minutes it cuts out. I had a new copper earth rod placed in very deep and the earth seems fine (3.5 ohms!) as it always starts to charge. So I’m wondering why it’s cutting out. The CanZE app shows that the available charge is 51 kW and I’m wondering if that is too strong and it’s causing the Zoë to cut out while charging. So what does available charge mean on a renault zoe? Thanks. P.S It charges fine everywhere else except at home.

    • Jeroen Meijer says:

      I assume you mean “Available charging power”. It means what the chargepoint can give you. If it is on 51 I think yo are on an old version of CanZE (assuming Android version here); it basically means “I don’t know”. Earthing is not your problem. That assessment is made before actual charging starts. Seems more like a control problem in your charger or possibly the car. Try it on another charger with the same configuration, ie phase count to ensure it’s not the car.

      • Denis Mark says:

        Dear Jeroen. Thank you for your quick reply. Renault replaced the EMR and internal charger, but it made no difference. Strangely my Renault supplied domestic cable works better in the sun without cutting out, but at night always cuts out after 20 minutes. Maybe the charger needs an electric blanket at night!

  9. Thomas says:

    Hi, i see in CanZe Anroid App in section of Tyres new buttons with name read and write. Can i learn new TPMS sensors in the Zoe board system? So that i can change from Winter to Summer tyres without visit the Renault service center?

    • Jeroen Meijer says:

      You can read and write ID’s. You cannot make the car learn new, unknown valves, so ideally, you write down the set of IDs of your current tyres, have the dealer change them, then write again.

      We have a bug report on the writing but that is under investigation.

  10. Peter Meinhardt says:

    Hi, it has been mentioned that you can read out (and even edit) the tire pressure sensor IDs, but I can’t find that info anywhere in the iOS CanZE app (neither in the roughly 550 DTC variables nor on the Tires page). Am I missing or misunderstanding something obvious? Would like to do the ID update on my own after the next summer/winter tire change service.

    Really love the app – it was not until using it that I became aware that the tire sensors actually transmit the pressure and not just a binary low-pressure indication – weird that this info is not offered on the Zoe dashboard.

Leave a Reply to Denis Mark Cancel reply