VSC, TRAC OFF & Check engine light on

my RX 300 year 99, the VSC , Trc off and check light come on, l self diagnose the ABS light blinks 4 times follow by 6 times and the VSC lights blinks 4 times follow by 3 times but the check light does not blink?need info and help.

I had the same lights come on my Lexus RX 300 and after searching some forums I ran across one guy who mentioned it happened to his 4 runner after service. He said he found that the air hose setting directly behind the air filter was disconnected.

I recently had my Lexus serviced and after disconnecting the battery on two different occassions, I went out side took my flashlight and looked down behind the air filter and sure enough there was the hose disconnected.

Most of the time it happens when service or the air filter has been checked and the hose comes off. I reconnected the hose, disconnet the battery and the light hasn't come back on. On the forum I read about it, the guy mention that it takes about 100 to 200 miles after it is disconnected before it comes trips the lights. I thought at first it was my gas cap, I retightened the cap and disconnected the battery and the light stayed out for about 4-5 days, it found the hose off behind the air filter and put it back on reset the code by disconneting the battery and it has stayed off.

Those exact lights will come on with alot of different codes. An example is on my 01 RX the shift solenoid E was defective. Same exact lights came on, also when 1 of my O2 sensors went out.

When the computer detects a problem it is kicking on the other components MIL's as well. Why they did this I will never know. Remember, if the Trac, ABS etc lights come on, they are not not activated. In this case your ABS system is deactivated and so on.

I had the same thing happen to my 4 runner and i looked at the code and it said that the gas tank pressure was not right turns out the gas cap was not tight. so after tightning the gas cap the codes cleared and the lights went out?? go figure. not sure why the vsc and trak off lights came on?

my truck had the same lights turns out the gas cap was not tight. codes went out and lights turned off. not sure why the vsc and trak lights were on ?

Why vsc and check engine for toyata harrier v6 model @3.0 engine appear?computer search these coz from exhause sensor.after change a new one it still appear and can't off.aanyone can help.