Car radios have two sources of power. One source is on all the time to power the clock and keep the presets. The other is hot when the key is on. Some cars have a delay so the radio stays on for a few minutes after the key is turned off.
In my 2003 A4 Quattro, the radio comes on without the car being on or with the key in the acc position.
2004 Audi A4
-
Car Customization
I am considering installing a remote starter on my 2004 Audi A4 wagon but I've read that it is not good for the car to idle for a long time. Has anyone had any problems after installing remote star...
2004 Audi A4 3.0 quattro Sedan AWD
-
Car Customization
I am looking at buying a 2011 BMW 335 or a 2013 Audi A4 and I was wondering which one would be better? By better I mean price to quality ratio and reliability and the ability to tune and customize ...
2013 Audi A4 2.0T Premium FWD
-
Car Customization
audi a4 sterio is crap there is no bluetooth no dvd and it keeps switching off can i get a up dated sterio to fit
2008 Audi A4 2.0T FrontTrak Sedan FWD
-
Car Customization
Ok I found a 2000 Audi A6 with a 2.7t motor whole car 1400 good Trans an motor could I swap that an put the motor an transmission in my 04 Audi A4 body?
2004 Audi A4 1.8T Turbo Sedan FWD
-
Car Customization
Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.