VW e-Up

Vehicle Type: VWUP

This vehicle type supports the VW e-UP (2013-, 2020-), Skoda Citigo E IV and the Seat MII electric (2020-). Connection can be made via the OBD2 port to the top left of the driving pedals and/or the Comfort CAN bus, e.g. below the passenger seat (T26 connector, instead of the VW OCU there).

The main difference currently is that the OBD connection enables access to way more metrics (e.g. down to cell voltages), while the Comfort CAN connection is necessary if write access is needed, e.g. for remote climate control. The Comfort CAN also provides data in more cases without turning on the car or charging, as the bus wakes on many events (e.g. opening of doors) and can also be woken via OVMS.

For the full experience, making both connections is recommended.

Connection to OBD2 is done with the standard OVMS OBD2-cable just below the fuses left of the driving pedals:

../../../_images/1441200-3.jpeg ../../../_images/DSC00369_1024.JPG

Connection to Comfort CAN can be done by removing the OCU below the passenger seat using a custom 26-pin adapter cable to the T26A plug (advantage: the connections for the GSM & GPS-antennas of the car can be used using a Fakra-SMA adapter):

../../../_images/location.png ../../../_images/grinded_ribbon.png ../../../_images/fakra_sma.png

(The passenger seat doesn’t have to be removed, it can also be done by fiddling around a bit :))

If both connections are to be made simultaneously, an adapter cable has to be made with the following connections:

../../../_images/DSC00373_1024.JPG

The cable used between the OBD plug and the DB9-F plug needs to be twisted to avoid transmission problems. A good cable to use here is a CAT-5 or CAT-6 double shielded network cable. Be shure to not only connect CAN hi and CAN lo, but also connect ground.

T26 OBD DB9-F Signal
26 4 3 Chassis / Power GND
. 14 2 can1 L (Can Low)
. 6 7 can1 H (Can High)
. . 4 can2 L (Can Low, not used)
. . 5 can2 H (Can High, not used)
2 . 6 can3 L (Comfort-can Low)
14 . 8 can3 H (Comfort-can High)
1 . 9 +12V Vehicle Power

After selecting the VW e-Up vehicle module, the corresponding settings have to be made in the web interface via the “VW e-Up” menu under “Features”:

../../../_images/Features1.png

By default, both connections are activated.

For more details on the two connection types, please see the corresponding projects:

VW e-Up via Comfort CAN (T26A)

VW e-Up via OBD2

The initial code is shamelessly copied from the original projects for the Comfort CAN by Chris van der Meijden and for the OBD2 port by SokoFromNZ.

List of (possible) metrics via OBD2: https://www.goingelectric.de/wiki/Liste-der-OBD2-Codes/

If OBD is selected, a sample page with some charging metrics is shown in the web interface:

../../../_images/Charging_Metrics.png ../../../_images/Custom_Metrics.png

Beware: obviously, these values have great uncertainties (in my car, the DC output voltage of the charger is always lower than the voltage of the battery…) But e.g. the internal energy counters are very informative :)

Additional custom web pages (code for the example above is below) can be defined as described here: https://docs.openvehicles.com/en/latest/plugin/README.html?highlight=web%20plugin#installing-web-plugins

Support Overview

Function Support Status
Hardware Any OVMS v3 (or later) module. Vehicle support: 2013-
Vehicle Cable Comfort CAN T26A (OCU connector cable, located under front passenger seat) to DB9 Data Cable for OVMS using pin 6 and 8 for can3 _AND_ OBD-II to DB9 Data Cable for OVMS (1441200 right, or 1139300 left) for can1
GSM Antenna T4AC - R205 with fakra_sma adapter cable or 1000500 Open Vehicles OVMS GSM Antenna (or any compatible antenna)
GPS Antenna T4AC - R50 with fakra_sma adapter cable or 1020200 Universal GPS Antenna (or any compatible antenna)
SOC Display Yes
Range Display Yes
Cabin Pre-heat/cool Control Yes
GPS Location Yes (from modem module GPS)
Speed Display Yes
Temperature Display Yes (see list of metrics below)
BMS v+t Display Yes
TPMS Display tba
Charge Status Display Yes
Charge Interruption Alerts Yes (per notification on the charging state)
Charge Control tba
Lock/Unlock Vehicle No
Valet Mode Control No
Others See list of metrics below

Supported Standard Metrics

The second column specifies the bus from which the metrics are obtained. Metrics via OBD are only updated when the vehicle is on (ignition started) or some in charging mode. Metrics via T26 (Comfort CAN) can be updated on demand by waking the Comfort CAN from the OVMS module. During charging, the Comfort CAN automatically wakes every 5% of SoC.

Metric name bus Example value Description
v.b.12v.voltage direct 12.9 V Current voltage of the 12V battery
v.b.consumption OBD 0Wh/km Main battery momentary consumption
v.b.current OBD 23.2 A Current current into (negative) or out of (positive) the main battery
v.b.energy.recd.total OBD 578.323 kWh Energy recovered total (life time) of the main battery (charging and recuperation)
v.b.energy.used.total OBD 540.342 kWh Energy used total (life time) of the main battery
v.b.power OBD 23.234 kW Current power into (negative) or out of (positive) the main battery.
v.b.range.est T26 99km Estimated range
v.b.range.ideal T26 48km Ideal range
v.b.soc OBD, T26 88.2 % Current usable State of Charge (SoC) of the main battery
v.b.temp OBD 22.5 °C Current temperature of the main battery
v.b.voltage OBD 320.2 V Current voltage of the main battery
v.c.12v.current OBD 7.8A Output current of DC/DC-converter
v.c.12v.power OBD 0.123kW Output power of DC/DC-converter
v.c.12v.temp OBD 34.5°C Temperature of DC/DC-converter
v.c.12v.voltage OBD 12.3V Output voltage of DC/DC-converter
v.c.charging T26 true Is vehicle charging (true = “Vehicle CHARGING” state. v.e.on=false if this is true)
v.c.climit fixed 16/32A Maximum charger output current
v.c.current OBD 1.25A Momentary charger output current
v.c.efficiency OBD 91.3 % Charging efficiency calculated by v.b.power and v.c.power
v.c.kwh OBD 2.6969kWh Energy sum for running charge
v.c.mode T26 standard standard, range, performance, storage
v.c.pilot T26 no Pilot signal present
v.c.power OBD 7.345 kW Input power of charger
v.c.state T26 done charging, topoff, done, prepare, timerwait, heating, stopped
v.c.substate T26   scheduledstop, scheduledstart, onrequest, timerwait, powerwait, stopped, interrupted
v.c.temp OBD 16°C Charger temperature
v.c.time T26 0Sec Duration of running charge
v.c.voltage OBD 0V Momentary charger supply voltage
v.d.cp T26 yes yes = Charge port open
v.d.fl T26   yes = Front left door open
v.d.fr T26   yes = Front right door open
v.d.hood T26   yes = Hood/frunk open
v.d.rl T26   yes = Rear left door open
v.d.rr T26   yes = Rear right door open
v.d.trunk T26   yes = Trunk open
v.e.awake T26 no yes = Vehicle/bus awake (switched on)
v.e.cabintemp T26 20°C Cabin temperature
v.e.drivetime T26 0Sec Seconds driving (turned on)
v.e.headlights T26   yes = Headlights on
v.e.hvac T26   yes = HVAC active
v.e.locked T26   yes = Vehicle locked
v.e.on T26 true Is ignition on and drivable (true = “Vehicle ON”, false = “Vehicle OFF” state)
v.e.parktime T26 49608Sec Seconds parking (turned off)
v.e.serv.range OBD 12345km Distance to next scheduled maintenance/service [km]
v.e.serv.time OBD 1572590910Sec Time of next scheduled maintenance/service [UTC]
v.e.temp OBD, T26   Ambient temperature
v.i.temp OBD   Inverter temperature
v.m.temp OBD 0°C Motor temperature
v.p.odometer OBD, T26 2340 km Total distance traveled
v.p.speed T26 0km/h Vehicle speed
v.vin T26 VF1ACVYB012345678 Vehicle identification number

Custom Metrics

In addition to the standard metrics above the following custom metrics are read from the car or internally calculated by OVMS using read values.

Metric name bus Example value Description
xvu.b.cell.delta OBD 0.012 V Delta voltage between lowest and highest cell voltage
xvu.b.soc.abs OBD 85.3 % Current absolute State of Charge (SoC) of the main battery
xvu.c.soc.norm OBD 80.5 % Current normalized State of Charge (SoC) of the main battery as reported by charge management ECU
xvu.c.ac.i1 OBD 5.9 A AC current of AC charger phase 1
xvu.c.ac.i2 OBD 7.0 A AC current of AC charger phase 2 (only for model 2020+)
xvu.c.ac.p OBD 7.223 kW Current charging power on AC side (calculated by ECU’s AC voltages and AC currents)
xvu.c.ac.u1 OBD 223 V AC voltage of AC charger phase 1
xvu.c.ac.u2 OBD 233 V AC voltage of AC charger phase 2 (only for model 2020+)
xvu.c.dc.i1 OBD 1.2 A DC current of AC charger 1
xvu.c.dc.i2 OBD 1.2 A AC current of AC charger 2 (only for model 2020+)
xvu.c.dc.p OBD 6.500 kW Current charging power on DC side (calculated by ECU’s DC voltages and DC currents)
xvu.c.dc.u1 OBD 380 V DC voltage of AC charger 1
xvu.c.dc.u2 OBD 375 V DC voltage of AC charger 2 (only for model 2020+)
xvu.c.eff.calc OBD 90.0 % Charger efficiency calculated by AC and DC power
xvu.c.eff.ecu OBD 92.3 % Charger efficiency reported by the Charger ECU
xvu.c.loss.calc OBD 0.733 kW Charger power loss calculated by AC and DC power
xvu.c.loss.ecu OBD 0.620 kW Charger power loss reported by the Charger ECU
xvu.e.serv.days OBD 78 days Time to next scheduled maintenance/service [days]
xvu.m.soc.abs OBD 85.3 % Current absolute State of Charge (SoC) of the main battery as reported by motor electronics ECU
xvu.m.soc.norm OBD 80.5 % Current normalized State of Charge (SoC) of the main battery as reported by motor electronics ECU

Example Code for Web Plugin with some custom metrics:

<div class="panel panel-primary">
 <div class="panel-heading">Custom Metrics</div>
 <div class="panel-body">

  <hr/>

  <div class="receiver">
   <div class="clearfix">
    <div class="metric progress" data-metric="v.b.soc" data-prec="1">
     <div class="progress-bar value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="width:0%">
      <div>
       <span class="label">SoC</span>
       <span class="value">?</span>
       <span class="unit">%</span>
      </div>
     </div>
    </div>
    <div class="metric progress" data-metric="xvu.b.soc.abs" data-prec="1">
     <div class="progress-bar progress-bar-info value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="width:0%">
      <div>
       <span class="label">SoC (absolute)</span>
       <span class="value">?</span>
       <span class="unit">%</span>
      </div>
     </div>
    </div>
   </div>
   <div class="clearfix">
    <div class="metric number" data-metric="v.b.energy.used.total" data-prec="2">
     <span class="label">TOTALS:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Used</span>
     <span class="value">?</span>
     <span class="unit">kWh</span>
    </div>
    <div class="metric number" data-metric="v.b.energy.recd.total" data-prec="2">
     <span class="label">Charged</span>
     <span class="value">?</span>
     <span class="unit">kWh</span>
    </div>
    <div class="metric number" data-metric="v.p.odometer" data-prec="0">
     <span class="label">Odo</span>
     <span class="value">?</span>
     <span class="unit">km</span>
    </div>
    <div class="metric number" data-metric="v.e.serv.range" data-prec="0">
     <span class="label">SERVICE:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Range</span>
     <span class="value">?</span>
     <span class="unit">km</span>
    </div>
    <div class="metric number" data-metric="xvu.e.serv.days" data-prec="0">
     <span class="label">Days</span>
     <span class="value">?</span>
     <span class="unit"></span>
    </div>
   </div>

   <h4>Battery</h4>

   <div class="clearfix">
    <div class="metric progress" data-metric="v.b.voltage" data-prec="1">
     <div class="progress-bar value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="300" aria-valuemax="420" style="width:0%">
      <div>
       <span class="label">Voltage</span>
       <span class="value">?</span>
       <span class="unit">V</span>
      </div>
     </div>
    </div>
    <div class="metric progress" data-metric="v.b.current" data-prec="1">
     <div class="progress-bar progress-bar-danger value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="-200" aria-valuemax="200" style="width:0%">
      <div>
       <span class="label">Current</span>
       <span class="value">?</span>
       <span class="unit">A</span>
      </div>
     </div>
    </div>
    <div class="metric progress" data-metric="v.b.power" data-prec="3">
     <div class="progress-bar progress-bar-warning value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="-70" aria-valuemax="70" style="width:0%">
      <div>
       <span class="label">Power</span>
       <span class="value">?</span>
       <span class="unit">kW</span>
      </div>
     </div>
    </div>
   </div>
   <div class="clearfix">
    <div class="metric number" data-metric="v.b.temp" data-prec="1">
     <span class="label">Temp</span>
     <span class="value">?</span>
     <span class="unit">°C</span>
    </div>
    <div class="metric number" data-metric="xvu.b.cell.delta" data-prec="3">
     <span class="label">Cell delta</span>
     <span class="value">?</span>
     <span class="unit">V</span>
    </div>
   </div>

   <h4>Temperatures</h4>

   <div class="clearfix">
    <div class="metric progress" data-metric="v.e.temp" data-prec="1">
     <div class="progress-bar progress-bar-warning value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="-10" aria-valuemax="40" style="width:0%">
      <div>
       <span class="label">Ambient</span>
       <span class="value">?</span>
       <span class="unit">°C</span>
      </div>
     </div>
    </div>
    <div class="metric progress" data-metric="v.e.cabintemp" data-prec="1">
     <div class="progress-bar progress-bar-warning value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="-10" aria-valuemax="40" style="width:0%">
      <div>
       <span class="label">Cabin</span>
       <span class="value">?</span>
       <span class="unit">°C</span>
      </div>
     </div>
    </div>
    <div class="metric progress" data-metric="v.b.temp" data-prec="1">
     <div class="progress-bar progress-bar-warning value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="-10" aria-valuemax="40" style="width:0%">
      <div>
       <span class="label">Battery</span>
       <span class="value">?</span>
       <span class="unit">°C</span>
      </div>
     </div>
    </div>
    <div class="metric progress" data-metric="v.c.temp" data-prec="1">
     <div class="progress-bar progress-bar-warning value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="-10" aria-valuemax="40" style="width:0%">
      <div>
       <span class="label">Charger</span>
       <span class="value">?</span>
       <span class="unit">°C</span>
      </div>
     </div>
    </div>
    <div class="metric progress" data-metric="v.c.12v.temp" data-prec="1">
     <div class="progress-bar progress-bar-warning value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="-10" aria-valuemax="40" style="width:0%">
      <div>
       <span class="label">DC/DC-Converter</span>
       <span class="value">?</span>
       <span class="unit">°C</span>
      </div>
     </div>
    </div>
    <div class="metric progress" data-metric="v.i.temp" data-prec="1">
     <div class="progress-bar progress-bar-warning value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="-10" aria-valuemax="40" style="width:0%">
      <div>
       <span class="label">Inverter</span>
       <span class="value">?</span>
       <span class="unit">°C</span>
      </div>
     </div>
    </div>
    <div class="metric progress" data-metric="v.m.temp" data-prec="1">
     <div class="progress-bar progress-bar-warning value-low text-left" role="progressbar"
      aria-valuenow="0" aria-valuemin="-10" aria-valuemax="40" style="width:0%">
      <div>
       <span class="label">Motor</span>
       <span class="value">?</span>
       <span class="unit">°C</span>
      </div>
     </div>
    </div>
   </div>
  </div>
 </div>
</div>