ABS kicking in after suspension work

[Nelsonmd]

Hey guys, I helped a friend replace UCA's on his 04 tundra (I know, not a 4runner, but it's the same ABS system, sensors, basic design etc...) and after the work, he has started getting his ABS kicking in when turning into parking spots and the like. I read here that you can stretch the wires, but that typically caused the ABS light to turn on, not excessive ABS activation (he hasn't noticed the ABS light turning on at all).

It's possible we pulled the wires, but I wouldn't think that'd cause the ABS to kick in too much. We took the ABS sensors out to prevent from pulling them while we did the work, but he might have pulled one of them before I got there to help him.

Anyway, maybe it's as simple as a stretched wire, but just wanted to see if anyone has had this on their 4runner, or know why it would kick in too much.

 

[LINY4Runner]

Are you sure it's ABS and not VSC? The feeling will be similar. Might need a Zero Point Calibration?

 

[kernel.panik]

Are you sure it's ABS and not VSC? The feeling will be similar. Might need a Zero Point Calibration?

I was thinking the same thing...

I know that the VSC will trigger a long beep if it engages.
Doesn't the ABS light come on when it engages?

 

[LINY4Runner]

I was thinking the same thing...

I know that the VSC will trigger a long beep if it engages.
Doesn't the ABS light come on when it engages?

ABS light doesn't come on when the system activates- only when theres a problem

 

[EatonKyleH]

04 Tundra.

See TSB BR001-04

 

[Nelsonmd]

Thanks for the info. It looks like that isn't something that we can do ourselves, but have to go to a dealer for, correct? How much should that run?

 

[LittleCaesar]

Probably more than you need to know:
http://www.toyota-4runner.org/probl...ac-vsc-off-lights-zero-point-calibration.html

I had mine done (05 Tundra when switching from regular shocks to Billies) at an indy Toy shop for $225 and a full detail of a Lexus they were trying to sell (which they did) back in 2009.

 

[EatonKyleH]

Thanks for the info. It looks like that isn't something that we can do ourselves, but have to go to a dealer for, correct? How much should that run?

No problem. Really it shouldn't cost much through the dealer or shop that has the appropriate scan tool which is a simple memory reset.

The most I would expect is an hour or shop rate. (of course this varies but around $100 ish)

You can do it yourself with a jumper wire also. Its covered in the TSB but maybe not shown of the site you're using.... anyway.

(SST 09843--18040 blah blah blah means Special Service tool but is really a piece of wire.)

ZERO POINT CALIBRATION
-- BR001-04
February 4, 2004
Page 4 of 4

Zero Point Calibration Using SST 09843--18040
The following procedure may be used in the cases where a Diagnostic Tester is not available.

NOTE:
While performing the Zero Point Calibration, do not tilt, move or shake the vehicle.
The vehicle must remain in a stationary condition throughout the entire process.

Be sure to perform the procedure on a level surface with an inclination of less than 1%.

1. Ensure the shift lever is in the “P” range.
2. Turn the ignition switch ON.
3. Using SST 09843--18040, repeat a
cycle of short and open between terminals Ts and
CG of DLC3 4 times or more within 8 seconds (refer to the specific vehicle EWD for TS and CG pin location in the DLC3).
4. Verify that the VSC indicator light is lit indicating the recorded zero point is erased.
5. Turn the ignition switch OFF.
6. Be sure the terminals Ts and CG of DLC3 are disconnected.
7. Turn the ignition switch ON.
8. Check that the VSC warning light goes off about 15 seconds after the ignition switch
is turned ON.
9. After ensuring that the VSC warning light remains OFF for 2 seconds, turn the ignition
switch OFF.
10. Connect terminals Ts and CG of DLC3 using SST 09843--18040.
11. Turn the ignition switch ON.
12. After turning the ignition switch ON, check that the VSC warning light is lit for about
4 seconds and then starts quick blinking at 0.13 second intervals.
13. After ensuring the blinking of the VSC warning light for 2 seconds, turn the ignition
switch OFF.
14. Remove the SST from terminals Ts and CG of DLC3.
15. Drive the vehicle forat least 5 minutes
to confirm Zero Point Calibration is complete

 

[Nelsonmd]

You can do it yourself with a jumper wire also. Its covered in the TSB but maybe not shown of the site you're using.... anyway.

(SST 09843--18040 blah blah blah means Special Service tool but is really a piece of wire.)

Haha, of course it is. I read through the TSB a bit quickly and didn't see immediately how to do it with just a jumper wire, but I will read through it again, and your post. Thanks for posting that. I think I have seen that in some other threads, but I guess didn't quite put 2 and 2 together.

Anyway, thanks for the posts guys, I will forward this info to my friend to see if this fixes his problem.