(FIXED 7.3.19) Zero Point Calibration Not Working- Steering Light On

[rigtec]

"...Maybe I'll make an appointment with the dealer next weekend. Ignoring the lights didn't seem to make it go away. I was hoping that attempt would have been the fix lol...

...Steering wheel and alignment couldn't be any better at this point. Also couldn't be happier with the alignment... I've successfully done the ZPC twice in my driveway before. There's something else affecting it all. I do feel I have no chance at fixing this at the moment lol."

Hi MyanRagahis,

Please listen...

you'll "NEVER" get the truck back online until you have a "Proper alignment"; you've replaced the LCA's so the steering needs to be properly corrected; Zero Point and YAW rate may be completely off; compared to factory settings, and the ecu's know that!

And I know that you (likely) have a few DTC's being stored... that's why you can't get the "Steering and other related ecu's to function correctly"! I hate to see you go through this (unnecessarily); but there's a protocol involved here and it's NOT been met!

You'll enjoy your truck a lot more after that's all fixed! 'Best to you',

rig

 

[flyrv9]

If the truck has to be within 1% of plumb, then how and where is this measured? If the OP did the ZPC twice in his driveway and knowing most all driveways are sloped for drainage; I'm curious. I'm familiar with leveling airplanes to do certain alignments. They have a target mounted for a plum bob to reference - so I was wondering if there is a target or reference marker somewhere placed by Toyota for future adjustments on our vehicles.

That way one could know the vehicle was level before attempting alignments like the ZPC. Even siting in the vehicle would exceed 1% of level / plumb unless jacks were used.

 

[MyanRagahis]

Update

See, the lack of the wheel position display in the cluster tells me the steering angle sensor is not communicating on the CAN Bus. Where the steering wheel and clock spring cable are in the amount of rotations is how the sensor determines the angle of the wheels. I believe the cable allows 5 full 360 degree rotations from center to full lock in left and right, but if the wheel was off due to the lift, then the center changed, and it’s possible that when you turned the wheel the ribbon cable inside the clock spring might have been damaged. If you take it to the dealer let us know what they find, but my money is on the clock spring and steering sensor assembly.

You hit it head on. Took it to Toyota Saturday and the diagnosis was needing a new spiral cable and steering angle sensor along with alignment. Dropped it off yesterday morning and got it back an hour ago.
The dealer experience was pleasant really. Sucks installing new parts got me into this but it is what it is. It's fixed and I'm happy.
Thanks for the help everyone!

 

[Jono.ful]

Take it to the dealer.

I have issues with zero point calibration after suspension work over the years and I have never been able to get the procedure to work correctly.
Your dealer will have a proper tool rather than a jumper wire, and it should be quick and cheap.

 

[RobRomero]

Help

Well,

I took me several tries to calibrate the CP and YR too! I even moved the vehicle because the parking lot is not 100% level. Eventually I got it... AFTER I cleared the DTC using a techStream cable! You've gotta clear the history logs and temp files or else, N/G!

You don't need a techStream scanner to clear them. Just use one of the you-tube vids and follow; just be sure to find a good one, there are hundreds of bad info floating out, as you know! And Like [MENTION=150567]Old Red[/MENTION] stated, you've gotta get the steering wheel straight and be sure that the alignment is dead on!

After that, you should be fine! 'Cheers',



rig!

Hi! I bought a 2012 T4R LTD this week. Previous owner lifted 2" less than 300 miles ago. Had to sell it because he's being moved to other country within his company. This week noticed several times, that ABS/VSC/Stability control kicked in on some turns at not so high speed. I almost died of panic the fist time, after thinking what happened figured out the sensors thought I was loosing stability. I've read on this forum that a ZPC is needed. I've a friend that has a scanner, so I was wondering if the scanner is all you need for that? and also, do you think I'll need to get rid of lift and go back to original settings? just wondering. Thanks for your suggestions.

 

[2021nightshade4x4]

What setup did he use to lift it? I have only seen small spacer style lifts recommended for Limiteds.


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