Hi guys. I own a 99 TL. Here's my problem. Everytime I start the car, the maintainence light blinks for about 30 seconds and then disappears. I changed the engine oil about 4000km's ago. The guy at the dealership said to ignore it. Is there anything I should get checked?

Also, I bought this car used at around 157km. It's now at 168km. Are there any things I should replace or check for? I can't get a hold of the previous owners service history.

Thanks.