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Check Hybrid System light on?

(2006 Toyota Highlander Hybrid)
in Sylvania, AL on December 13, 2010
my check hybrid system warning light came on then the check VSC System came on briefly and the car then stopped. Check Hybrid System light came back on but I was able to start the car again. It seems ok except for the Check hybrid system light remains on. The manual says stop your vehicle and call a Toyota dealer, however, I had to drive a few more miles to get home since it was late at night and 19 degrees outside.
Displaying 6 answers & 5 comments
Popular Answer
on February 24, 2011
HI! I have had this happen several times to my 2006 Highlander Hybrid. It always occured a few days after the little 12 volt battery had run down (due to dome light left on, door ajar). The first time was on a trip to Denver Colorado. My car did the same things as you described that yours did. I didn't have my scan tool with me to read the codes so after inspecting everthing under the hood I disconnected the 12 volt battery for about 2 minutes and reconnected it. This cleared the code and the problem never reappeared. About a month ago an interior light was left on for a few days and the battery was run down again. I jupmed it to get it started and about 3 days later I got the VSC lights again. I disconnected the battery to clear the error and it never reappeared again.
on February 24, 2011
Thanks , I did take it to the dealer and all it was just a loose connection with 12v battery cable.
on June 22, 2011
this message might appear when the gasoline in the tank is very low
fill the tank and it will vanish
on January 04, 2013
I had the exact same symptoms on my '06 HiHy. 12 V battery had run empty with key in ignition overnight and even after trickle charging it back to health and running the engine for > 1 hour around town, the 'Check Engine' and 'Check Hybrid System' messages wouldn't go away. Following the advice here, by disconnecting the negative lead on the 12 v battery for ~ 2 minutes, the messages all went away (as did my radio presets, but who's complaining!).
on February 22, 2016
Thanks, my wife just called and had the same thing occur and she was stuck at our local mechanic, I happened to have read this and told her to tell the garage mechanic where she was to remove the negative battery cable, wait 2 min put it back on and shazam! It's running like always. Great tip thank you.
on July 16, 2016

It happened to my 2006 Highlander this morning (I can't even start the car) and have the AAA guy tried to disconnect the 12v negative cable, waited 2 minutes and reconnected to the battery. I restarted the car and it worked fine.

I drove for all day and the mid signal and Check VSC system light comes on as I am pulling into my driveway. The car still running and the break system workers fine as I pulled it to a stop in front of my garage.

I then let the car to cool of (90 F degree today) for about an hour, turn it on again (still see the Check VSC warning light), disconnect the battery negative cable, wait for 2 minutes, restarted and all the warning lights are gone.

This is the 1st time I see this since I bought the car in 2005.
on March 31, 2016
I just took the negative post off of my battery, waited about 5 minutes and now my car won't start. I have a Christmas tree of lights and it doesn't do anything, any ideas?
on July 16, 2016
It just happened to my 2006 for the first time since I bought the this car (now 275K miles). I called AAA and they think my battery is good. I told the guy to try the suggestion here and it worked!!

Thank you for posting this article!!
on December 13, 2010
Get the car to a Toyota specialist. Probably best to tow it to prevent further problems.
Here's a directory link for you:
on September 30, 2017
My 2di008 Toyota Camry had check VSC system and check hybrid system light on... did what you guys suggested ...took out negative lead on battery waited 3 min...reconnected and warning lights gone...u guys rock...i hope warning lights never comes back :)
on March 07, 2017
I got the dreaded check hybrid system and was told by the dealer they doubted it was the hybrid battery. I have 153,000 miles on my Camry Hybrid. I ended up reading about 10 different sites on this issue and decided to use "Just Answer" for $15 to see if a Toyota mechanic had any ideas on the issue. He too said he doubted the hybrid battery, but said I should have the car towed to a Toyota dealer to have it scanned and have the experts look at it. So being that I believe in the KISS plan of attack... unhooked the negative on the battery for a few minutes and tried it again. Voila... car is working fine. Very annoying....
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