2003 LS430 - Check VSC and ABS Lights Go on Then Off
#1
Lead Lap
Thread Starter
2003 LS430 - Check VSC and ABS Lights Go on Then Off
Hello,
My 2003 LS430 has just started throwing the "Check VSC" message with check engine light "!" and ABS light. It does not do it when started only when I get up to highway speeds.
It did it in the morning when I was driving to work. It was also slightly shaking / vibrating. It also did it in the evening when I was driving home, but did not shake / vibrate. In each case, it seemed to come on when I hit highway speeds, then turn off after continuing to drive. The lights do not stay on.
Can I read the codes with a regular OBDII scan tool on this vehicle? Any ideas?
Thanks!
My 2003 LS430 has just started throwing the "Check VSC" message with check engine light "!" and ABS light. It does not do it when started only when I get up to highway speeds.
It did it in the morning when I was driving to work. It was also slightly shaking / vibrating. It also did it in the evening when I was driving home, but did not shake / vibrate. In each case, it seemed to come on when I hit highway speeds, then turn off after continuing to drive. The lights do not stay on.
Can I read the codes with a regular OBDII scan tool on this vehicle? Any ideas?
Thanks!
#2
Pole Position
Check engine light will throw an OBD II code that should be stored in the ECU. Hook-up your OBD II scan reader and pull all codes, then research. (I had similar issue (not on a Lexus) and the issue was an electrical connection (intermittent short) to the ABS brakes.)
#3
Lead Lap
Thread Starter
We have a lot of snow and ice here, maybe it's shorting something?
#4
Lead Lap
Thread Starter
It happened again so I plugged in my generic OBDII scanner while
the Check VSC and ABS lights were on. It didn't find any codes though!
Does anyone know how I can further troubleshoot the problem?
Are the problem codes stored in a separate computer? Can I access this
somehow?
HELP! Don't want to take it to the dealership if at all possible!
the Check VSC and ABS lights were on. It didn't find any codes though!
Does anyone know how I can further troubleshoot the problem?
Are the problem codes stored in a separate computer? Can I access this
somehow?
HELP! Don't want to take it to the dealership if at all possible!
#5
Make sure there are no 'pending codes'. Some scanners report these separately from 'trouble' codes. TC's are the ones that set off the MIL light permanently (until it's reset). Pending codes don't trigger the MIL light on a permanent basis until certain conditions are met. At least that's how I understand it.
My reader will report no engine trouble codes but CAN have codes stored as pending (they were not an issue long enough to cause the MIL light to be set).
My reader will report no engine trouble codes but CAN have codes stored as pending (they were not an issue long enough to cause the MIL light to be set).
#6
Lead Lap
Thread Starter
Make sure there are no 'pending codes'. Some scanners report these separately from 'trouble' codes. TC's are the ones that set off the MIL light permanently (until it's reset). Pending codes don't trigger the MIL light on a permanent basis until certain conditions are met. At least that's how I understand it.
My reader will report no engine trouble codes but CAN have codes stored as pending (they were not an issue long enough to cause the MIL light to be set).
My reader will report no engine trouble codes but CAN have codes stored as pending (they were not an issue long enough to cause the MIL light to be set).
I am hoping that this may be the cause of the VSC light since it has gone off again. If the codes come back, I'll pull the codes using the pin jumpering technique (paperclip) from the service manual.
#7
Lead Lap
Thread Starter
Well the VSC and ABS light came back on. They keep coming on when I hit highway speeds and then turning off. Thanks to Lynzoid's help I pulled the codes with a paperclip. I am getting ABS codes 32 and 36. Are these wheel speed sensors? I don't have my book on me right now. Any help would be appreciated.
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#8
Lexus Test Driver
36 - yaw rate sensor zero point cal is not done. this usually pops up after using crappy 'universal' scanners.
you have to perform 'zero point calibration' as described in 'vsc -> pre-check' in serv. manual. this will involve same jumper wire and some pedal pressing.
32 - slightly worse. deceleration sensor fault.
Ok, this unit is located under the shifter cover towards the globebox and includes both yaw rate and deceleration sensor. My guess - you spilled some drink there and it gone thru the connector. Get in there and check everything.
Manual will help.
Ouch, just checked price for this unit... over 1k usd.
you have to perform 'zero point calibration' as described in 'vsc -> pre-check' in serv. manual. this will involve same jumper wire and some pedal pressing.
32 - slightly worse. deceleration sensor fault.
Ok, this unit is located under the shifter cover towards the globebox and includes both yaw rate and deceleration sensor. My guess - you spilled some drink there and it gone thru the connector. Get in there and check everything.
Manual will help.
Ouch, just checked price for this unit... over 1k usd.
#9
Lead Lap
Thread Starter
36 - yaw rate sensor zero point cal is not done. this usually pops up after using crappy 'universal' scanners.
you have to perform 'zero point calibration' as described in 'vsc -> pre-check' in serv. manual. this will involve same jumper wire and some pedal pressing.
32 - slightly worse. deceleration sensor fault.
Ok, this unit is located under the shifter cover towards the globebox and includes both yaw rate and deceleration sensor. My guess - you spilled some drink there and it gone thru the connector. Get in there and check everything.
Manual will help.
Ouch, just checked price for this unit... over 1k usd.
you have to perform 'zero point calibration' as described in 'vsc -> pre-check' in serv. manual. this will involve same jumper wire and some pedal pressing.
32 - slightly worse. deceleration sensor fault.
Ok, this unit is located under the shifter cover towards the globebox and includes both yaw rate and deceleration sensor. My guess - you spilled some drink there and it gone thru the connector. Get in there and check everything.
Manual will help.
Ouch, just checked price for this unit... over 1k usd.
When the code was flashing, it was the ABS light going on and off.
In my 2003 LS430 service manual it says:
DTC Chart of ABS:
C205 / 32 - Left front wheel speed sensor signal malfunction
C1236 / 36 - Foreign matter is attached on the tip of the left front sensor.
#11
Lead Lap
Thread Starter
Looks like around $200 from Sewell for the sensor alone and $270 for the hub and sensor. Only $70 dollars more for the hub? WTF! Weird. Probably just get the whole thing then. I guess this has the wheel bearing as well?
Think it's possible the sensor is gummed up with something? Is this a common problem?
Also, do I need a special tool to remove the four bolts on the hub? I think it says so in the manual. But I've seen a walkthrough for the 2004-2006 where the guy didn't use one. Don't know if it's the same on the older LS430s.
#12
Lead Lap
Thread Starter
#14
Lead Lap
Thread Starter
See my post below.
https://www.clublexus.com/forums/ls4...-no-codes.html
Problem was excessive corrosion of the positive battery terminal due to a leaking battery. When the corrosion is cleaned all the error codes go away.
https://www.clublexus.com/forums/ls4...-no-codes.html
Problem was excessive corrosion of the positive battery terminal due to a leaking battery. When the corrosion is cleaned all the error codes go away.
#15
Lead Lap
Thread Starter
See my post below.
https://www.clublexus.com/forums/ls4...-no-codes.html
Problem was excessive corrosion of the positive battery terminal due to a leaking battery. When the corrosion is cleaned all the error codes go away.
https://www.clublexus.com/forums/ls4...-no-codes.html
Problem was excessive corrosion of the positive battery terminal due to a leaking battery. When the corrosion is cleaned all the error codes go away.
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