We just purchased this almost 2 months ago. All was fine until about 1 month ago, the dashboard started sounding like there was a coffee pot behind the dashboard brewing coffee. It "percolates" whether we are driving or sitting still. Occasionally it will be quiet, but mostly it's loud.
Sound lijke leaking heater core.
SOURCE: Flashing dashboard airbag light in 2003 Toyota Avalon
try wiggling wires under the front seats ,if that dont work then take the builb out
SOURCE: ''O/D OFF'' SIGNAL ON THE DASHBOARD
The O/D off means your overdrive is off. Have you accidently bumped it? It could be the start of a problem with electrical system. Usually a bad ground on your O/D may cause this. Intermitten problems are the hardest to track down and fix. Do you know what overdrive does? It's a gas savings device which cuts the engine's RPM's down by something like 1/3, like a 5th gear. That's why you are experiencing the jerking on the highway. Do you have an owners manual? If not a good place to look for one is at a local salvage yard, or online even. There may be something in there to explain this to you a little better than I did. I had a frien who had a simular problem. It turned out to be a bad fuse. It wasn't blown, it was broken, and it's element would jiggle around when he would hit bumps in the road. I don't know if this helped you, but it will give you place to start looking.
SOURCE: my 98 toyota avalon dashboard light sensor is on.
Pull the rear bulbs out an inspect them for dark marks on the glass or abnormalities in the filament.
A bulb that works but is on the verge of failing will trigger the indicator on the dash as well.
Failing that, the lamp failure module is very common to fail, triggering the light as well. You can pry the box lid off and usually see burn marks on the circuit board when this happens.
The lamp failure module is located behind the left rear tire area in the trunk.
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