Lexus rx300 check engine light along with track off and Vsc took it to the mechanic he change the sparks plugs and the air sensor lights went out only to come back again what do you think it is,pls help
The VSC & Track off lights usually turn on in unison with the CEL in Toyota products.
Start with scanning for any stored trouble codes.
This is where a scan tool with Enhanced Diagnostics/Mode 6/Live Data would be most useful. Any codes that might come up would be useful, particularly permanent codes (as opposed to codes that can be erased, which is what the mechanic obviously did). This mechanic cleared the codes. After 20 miles or so, they came back.
Find another mechanic, IMHO. This could be many different things, including a problem with the ABS module. Get the codes, and then, with those clues, the problem can at least be initially brainstormed, particularly if it's an electrical issue (power/ground/relays, etc.)
Find a mechanic who is NOT just replacing parts, but is actually doing diagnosis.
Along with any codes, please tell us how the vehicle is running. I have an RX300 with those lights on and it runs perfectly fine. In my case, it is the knock sensors.
