Hello all -
I bought 07 lx470 with 112k miles last year and after about 2k miles I noticed the ABS light would come on sometimes, if I were to hard brake it might go off, sometimes that didn't do anything. It would come on and off intermittently and then went away for a while. Earlier this year, the ABS light started to stay on and then the VSC TRAC lights were coming on and staying on.
Mind you I have had no issues with the car. There was a viper alarm already installed and sometimes that will give a startup beep but no buzzing sounds, no CEL, no difficulty with brakes. I installed the px6 radio but I can't see how that is affecting things. Did an AHC flush and that system is working great. The car steers well.
Oddly, now that it's cooling down at night here, I noticed the other day that the lights had all gone off (except for tire pressure light but i know that TPMS #2 is bad and I need that replaced) but then through the day those three lights will come back on. Has anyone had temperature sensitive lights like this??
I plugged into Autel reader and had a slew of codes:
c1223 - abs control system fault
c1246 - master cylinder pressure sensor
c1336 - ZPC not performed, although I have tried to jump this with paperclips and nothing seemed to change
c0371 - yaw rate sensor
c1275-c1278 speed sensor codes
c1282 - center diff lock position switch (???)
I've replaced the rear brakes/rotors and that went well and plan to do the front brakes with the speed sensors.
I guess my question is...wtf is going on? With all the codes being thrown but no obvious physical manifestations, it seems like an issue with some central control device, maybe ECU?
The odd part is the weather being colder and the codes going away and coming back, which I can't really explain.
Any ideas on more in-depth diagnostics?
TYIA
WR
I bought 07 lx470 with 112k miles last year and after about 2k miles I noticed the ABS light would come on sometimes, if I were to hard brake it might go off, sometimes that didn't do anything. It would come on and off intermittently and then went away for a while. Earlier this year, the ABS light started to stay on and then the VSC TRAC lights were coming on and staying on.
Mind you I have had no issues with the car. There was a viper alarm already installed and sometimes that will give a startup beep but no buzzing sounds, no CEL, no difficulty with brakes. I installed the px6 radio but I can't see how that is affecting things. Did an AHC flush and that system is working great. The car steers well.
Oddly, now that it's cooling down at night here, I noticed the other day that the lights had all gone off (except for tire pressure light but i know that TPMS #2 is bad and I need that replaced) but then through the day those three lights will come back on. Has anyone had temperature sensitive lights like this??
I plugged into Autel reader and had a slew of codes:
c1223 - abs control system fault
c1246 - master cylinder pressure sensor
c1336 - ZPC not performed, although I have tried to jump this with paperclips and nothing seemed to change
c0371 - yaw rate sensor
c1275-c1278 speed sensor codes
c1282 - center diff lock position switch (???)
I've replaced the rear brakes/rotors and that went well and plan to do the front brakes with the speed sensors.
I guess my question is...wtf is going on? With all the codes being thrown but no obvious physical manifestations, it seems like an issue with some central control device, maybe ECU?
The odd part is the weather being colder and the codes going away and coming back, which I can't really explain.
Any ideas on more in-depth diagnostics?
TYIA
WR