I have a 2010 Toyota RAV4. I took it to get looked at by the mechanic because my low tire pressure service indicator light came on after I got my snow tires put on at the dealership. They did a great job (the radiator hose was so rusted it fell off when they were looking at my engine, they only charged me for the replacement part not the labor). The light kept coming on several days after I got this done, and I knew my tires weren’t low on air. Anyway, the mechanic ended up saying my right front passenger tire pressure battery needed replacement, which I’m going to get taken care of as soon as I am able, but he noticed my engine sounded weird, and he pulled out a rusted hammer from the engine! How long do you think it’s been there? I only got the car a year ago!