The driver display that shows the air temp, mpg's, and other information looks to be pixled. At time when I start the ignition a jumbled display apears and then while driving, it slowly fades. Is it a connection problem, bulb, what?
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Re: 2001 Audi a4 Quattro driver display
No, it is not so simply. It is not a connection problem, bulb, ...
In the past I had the same problem on my car. I disassembled the instrument cluster, and there is no possibility to change this small display, because it is an embeded construction.
Your problem is the instrument cluster out of order !
If you want to solve this problem you must buy a new instrument cluster which must be encoded with a VAG diagnosis tool.
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Look inside your driverside front door or door jam the manufacturer puts a label specifying tire information, what it displays is what to properly inflate the front and rear tires to as well as what tire size they recommend you use on your particular vehical....
Your vehicle is rated at 16mpg in the city and 24 mpg on the highway. Your vehicle works out to 14.28 mpg. It depends if your driving in the city or on the highway. In the city, this would be acceptable, on the highway this would be very poor though. Also, it could depend on the actual mileage of your vehicle, as a engine wears out, often the car loses a small amoubt of efficiency, which would in turn lose a few mpg's. A few things you could do to improve your mpg would be to change your spark plugs to E3 type from made by Bosch, they give me at least an extra 3 mpg on my Honda Accord. Also make sure you have a clean air filter and a new fuel filter, all of these will pay for themselves at the pump after a short amoubnt of time. Happy Motoring! :)
For the dash display, if you're finding it to be intermittent, where it lights up sometimes and other times it doesn't, or if you have the driver information center that displays all kinds of info, but it's missing pixels, this is a common failure. The only fix is to buy another one, and they're very expensive (around $700).
As for the heater, turn on the system by hitting Auto or one of the fan speed buttons. Use the + and - buttons below the temp display to change the temp setting. If the heat doesn't heat up very well, you may have either a thermostat stuck open, or a failed heater core.