2015 Toyota Venza sunroof initiliazation

Griff Technician Oregon Posted   Latest   Edited  
Unsolved
Electrical
2015 Toyota Venza 2.7L (1AR-FE) 6-spd (U660E)
Cannot Initialize Sunroof Successfully

The sunroof initialization isn't working. I hear something clicking/noise at the end of 10 seconds but no movement to the glass. The glass will open correctly. When closing the roof glass it stops 6 inches short and will close if you push the switch again. Sunroof motor was replaced with new unit form Toyota. No codes present.

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Eddy Business Development Manager
California
Eddy
 

Just to confirm, is this the same initialization procedure you're using? - Procedure A - Turn the ignition switch to ON. - Press and hold the SLIDE CLOSE or TILT DOWN switch. NOTICE: Make sure not to release the switch during the initialization. If the switch is released, perform the initialization again. - The sliding roof glass starts sliding close operation and stops at the fully…

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Griff Technician
Oregon
Griff
 

Yes. About after 10 seconds you can hear a noise but no movement from the glass.

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Erik Diagnostician
Florida
Erik
 

Did you make sure the flexible tracks was lined up properly? Sometimes those get eaten with the motor or siezed like a window regulator would.

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Helpful
Benjamin Diagnostician
Connecticut
Benjamin
 

After the ten seconds, did you continue to hold the button? I had an RX recently that refused to initialize and it turns out I was not holding the button long enough, specifically the TILT DOWN switch in Procedure C.

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Steven Owner/Technician
California
Steven
 

Try completely closing the glass. Disconnect battery terminals, hold positive and negative terminal ends together for 10 minutes. Reconnect to battery and then try to initialize.

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Benjamin Diagnostician
Connecticut
Benjamin
 

Just wanted to chime in the last time I talked to someone from TAS they told me NEVER to do this. I guess someone blew all the airbags in a car when everything discharged at once. In a recent webinar, I brought this up, and the instructor mentioned using a 10W resistor was a safer option.

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Steven Owner/Technician
California
Steven
 

Weird. TAS has told me to do this at least half a dozen times specifically for initialization issues and it's fixed it more than once. I'd be willing to bet someone was messing with the yaw rate sensor or airbag ecu during diag on that incident with the airbags.

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Interesting
Bob Educator
California
Bob
 

I can never remember what the resistance is supposed to be. By the time anyone talks to me, it's already been done. I haven't heard of airbags blowing--I'll put that on the list. But a GM trainer--or two--said not to hold the positive and negative cables together. On some versions of OnStar, the vehicle logic is such that it treats this as an accident where the negative and positive cables on…

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Agree
Interesting
Benjamin Diagnostician
Connecticut
Benjamin
 

Yeah it was one of those things I actually wrote down, and figures I can't find the notes. I remember 10 W, but I don't remember the recommended Ω. Maybe 10 W is enough information for the correct piece? Maybe someone else remembers?

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Bob Educator
California
Bob
 

You're doing better than I have done. I've written it down multiple times--and forgotten it each time. Next time I have it, I'll make a necklace of the correct resistors and just wear it around for awhile, till it sinks in.

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Funny
Dwight Owner/Technician
California
Dwight
 

I also do not like to directly connect both battery cables together. I use my 12v incandescent test light to connect the two ends of the cables and use the bulb within the tester to drain residual power. Furthermore, I often wonder if I step on the brake peddle, would also drain the power. Or opening a door and let the dome lights do the same thing. Any thoughts?

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Benjamin Owner/Technician
Georgia
Benjamin
 

I wonder if (on vehicles with Onstar) the ignition switch is off and all doors shut would the Onstar battery still be activated by performing a cap discharge. I found this genuinegmparts​.​com/pdf/techinfo/b…​.​pdf and it’s got me wondering, because we all do cap discharging from time to time and start stop cars are also going to be more common. I wonder if super caps on…

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Benjamin Diagnostician
Connecticut
Benjamin
 

So far, TSBs and TAS both recommend either 10- or 30-minute hard reset (battery disconnected) to reset vehicle systems, depending on the op. How much this discharges things is another question.

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