No Ready Up 2007 Prius

Keith Owner/Technician Etna, Wyoming Posted   Latest  
Question
Driveability
Electrical
2007 Toyota Prius 1.5L (1NZ-FXE)
No Ready Up

Call from a customer for a no start Toyota prius, upon arrival found customer had replaced the combination meter (cluster in upper dash) un known reason with what I understand is a used part. Currently the vehicle will not react to ready button, no illumination from button, has correct power and ground, key fob operates all door locks and alarm although with smart key inserted security lamp is still on. I am unable to find great information at this time for if the combination meter is in control of security, (my understanding of toyota makes me think its not.)

Also checked am2 fuse to verify inverter pump failure is not the cause. I am checking for opinions before i remove the dash and check it with the old parts before continuing diag

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Kabel Technician
Wailuku, Hawaii
Kabel Default
 

Double check that the hybrid battery disconnect is properly installed as I have seen it only pushed in but not pushed down completely .

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Matt Technician
Lawrence, Massachusetts
Matt Default
   

I would try holding the key directly on the start button while pressing and see if it reacts. This vehicle has Smart-Key (black button on front door handles)? Maybe the key slot was left disconnected and the Smart Key button below the steering column is turned off. From there I would probably remove the dash pad for a visual inspection which is not that tough to do. Aslo, after attempting to…

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Keith Owner/Technician
Etna, Wyoming
Keith Default
 

nothing lights up, only function that illuminates is the hazards when unlocking vehicle, and the blinking theft light. no change with switch on or off, key in or out of slot. and Kabel, a disconnected HV bat should still allow the computers to turn on correct? I am receiving no power, or key recognition

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Matt Technician
Lawrence, Massachusetts
Matt Default
   

Sounds like a push button issue. If the key wasn't recognized or not there at all you should get a beep and an icon of a key with an exclamation point going through it when pushing the button. See attached. Correct, an improperly installed service disconnect will set an interlock code P0A0D and wont Ready Up but it wouldn't keep the dash blank

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Paul Owner/Technician
Boulder, Colorado
Paul Default
   

Combination meter on G2 has nothing to do with the immobilizer/security on G2 Prius. You can even "start" a G2 Prius with the dashtop and combo meter off the car. (I've done it multiple times). Check the connectors to the power button and key slot. Check The KEY or SMART button at bottom of steering column. Button should be connected to the harness and in the OUT position for Smartkey to work…

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Paul Owner/Technician
Boulder, Colorado
Paul Default
 

If hybrid battery orange plug is removed or disconnected/HV battery removed you can still get the car to IGN ON mode to change it into neutral, but it won't go READY to drive.

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Keith Owner/Technician
Etna, Wyoming
Keith Default
 

We cannot get the 12 volt to wake up, no orange lamp either on start button

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Matt Technician
Lawrence, Massachusetts
Matt Default
 

With the Smart Key button off (pushed in) you will get no missing key icon when pressing the button with the key out of the slot. You also won't get any orange light on the button. I just confirmed this with my personal Gen 2. It sounds like it's an issue with either the key slot ie the chip like Paul suggested, the button itself, the Smart Key button or some combination there of. If the…

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Eric Owner/Technician
Grand Rapids, Michigan
Eric Default
 

Since the theft light is blinking, possibly the immobilizer system hasn't finished its' programming. Not the best choice of words, I know, but the last step is to rapidly cycle the start button. Sometimes up to 30 seconds.

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Pj Technician
Pleasant Hills, Pennsylvania
Pj Default
 

Ive seen a handful of the Power source ecus fail on these. That ECU is what acts as the ignition switch on the … smart key system. Obviously you have the power switch, but that only tells the power source ecu to then supply power to all of the relays that power up the vehicle. Id check to see if youre getting power to the integration relay, in the fuse block under the hood. That integration…

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