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Check engine light on after remote start, low fuel warning light, AWD malfuction

0 votes

On DEC.8, 2021 I posted my question "H-KEY 2020 TOYOTA RAV4 LE EVO ONE WITH T-HARNESS REMOTE STARTER INSTALLED - SYSTEM MALFUNCTION" and got answer. I did what recommand to do, evnen hardwiring CAN HIGH/LOW  two wires and use RAV4 CAN connector plugged in ECU, no luck.

My rav4 remote start problem more like this after a few weeks oberservation

  • Use OEM remote or RFK442 remote, the low fuel yellow light show up after remote started, When going in the car, key in the key cylinder and turne to ON position, press brake, key taking over. The yellow low fuel light disappear, and fuel display needle moving up to level.
  • After a few times remote starting, when you try another remote starting, the check engine light show up, and screen also shwing "AWD System Malfuntion. 2WD Mode Engaged, Visit you r dealer"

The CHECK ENGINE light was P2067: generic fuel level sensor "B" circuit low. I am wondering that low fuel level sensor B dosen't powered up  when remote started, then ECU set the CHECK  ENGINE light. I reset it by OBDII, but it keep coming. If no remote starting, RAV4 going normal by the OEM key and no warning light.

Is this could be a communication issue between EVO ONE and RAV4 ? The IGNITION signal from EVO ONE should go power up fuel level sensor B when remote starting, but it doesn't. 

Any idea? Could you please look at 2020 RAV4 LE AWD(Canadian version) wiring diagram, see how.

Thanks in advance! 


asked Jan 5 in Toyota by Matthew Lee (240 points)

1 Answer

0 votes
Sounds like something isnt properly clipped in or there is a loose pin.


You issue sounds like it stems from the install itself.


I would remove the t-harness, return vehicle back to stock and see if error messages go away, if they do, you need to go over your work.
answered Jan 6 by derek ! (278,800 points)

Hi Jesus,

I did the one TPMS wire cut when car started with the key as you said. The "low fuel level warning light" came on as soon as I cut the wire.

Now it is clear In my case seems like the two TPMS wires is not connected inside EVO ONE when remote started the car,

So, what is next step?


'll double check the TPMS wire used for remoe starter.

For my undersdanding that TPMS wire used in remote starting  is for OEM remote functioning when vechicle remote started. My Toyota  remote is working good as it should be while remote started. In this point I choosen the correct  vehicle TPMS wire.


Hi Jesus Monroy,

I checked the TPMS wire on my RAV4: it is correct. Passenger side kick panel, blue connector pin 12 wire, light green.

HI, Jesus M

Could you please check "wire color" for 2020 TOYOTA LE H-key, See where is the "FUEL LEVEL SENSOR B" wire and color. I can compare with TPMS wire to make sure use correct wire. My wire color access expired long time agao.


I did this test for my RAV4, the result is that there was no "low fuel level warning light" while remote started and fuel gauge needle moved up.right way.

what i did:

  • Cut the two TPMS wires at EVO-ONE, joint together for RAV4 side.
  • Remote Started RAV4 from OEM/RFK remote.
  • Showing "No low fuel level light" and fuel level gauge needle moved up right way.
  • Key take over and drving for coulpe miles, RAV4 running normal.. 

Question: Is this (the problem with EVO -ONE in remote start) the Fortin software issue?



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