I have a 2003 audi a4. On my LED display, there is a warning light (similar to where the gas warning shows up) that has a circle and then another circle in the form of a dotted line around the inner circle. It looks like a tire to me, so I'm thinking that the tire pressure is low, but I just wanted to check with the experts here first, since I don't have an owner's manual . If it is indeed the tires being low, how much should I fill them?

Thanks so much!

-Thomas

 

(O) Add brake fluid.
It could also mean the front brake pads are worn.

 

Yea, that is for the front brake pads...There is a sensor in the pad and when it gets low it breaks, similar to when you hear brakes squeaking you get to the wear bar....Same thing, but there's a sensor instead of a wear bar

 

Thanks so much for the responses! This is very helpful. I went out and bought some brake fluid, and found the compartment in the car in which it goes. I took the first cap off and started pouring (into a filter-like thing). However, it didn't really go in, it just kind of spilled, so I stopped pouring. Is there a special way to put it in? Thanks.

Also, do I just need to add brake fluid, or do I need to take the old fluid out? Thanks!

 

Ok, the story develops a bit more. I showed it to a mechanic-type who knows what he's doing and he said the brake fluid was full. However, the brake pads are pretty new (~6 months), so I don't think it is that. More recently, the brake light started flickering (as well as the light I mentioned up above). Any ideas what could be going on? If not, I'll probably just take it to the mechanic.

Thanks!

 

The car should be level when adding brake fluid. Add slowly to the top.