i have a toyota rav 4 2007. check engine light VSC AND 4X4 lights came on . on 1996 Toyota RAV4

After 2 days the lights went off on their own.Since then car been fine apart from on odd occasion when going up or downhill a grey smoke comes from the exhaust.Then clears after a few seconds , no loss of power.....any ideas please for this non mechanical Englishman...thanks.

by in Tacoma, WA on April 07, 2013
2 answers 3 comments
ANSWER by on April 07, 2013
have the codes checked if the engine light is out your ecm stores codes and can be found with an obd reader
COMMENT by on April 07, 2013
thanks very much...will do
ANSWER by on April 07, 2013
have it scan tested for codes
COMMENT by on April 07, 2013
yes i will thanks.
COMMENT by on July 15, 2013
I had the same problem on my 2007 Rav 4. The cause was just a loose gas cap. If it isn't closed properly or the senor is broken, those 3 lights will go on. I simply opened the gas tank, took out the cap then snugly replaced and voila the lights went off. I was able to do this and I am a Chic! Easy

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