Dineau Posted January 15, 2011 Report Share Posted January 15, 2011 Is there a way to prevent the radio from rebooting if I restart the car ? Very often I stop to wait for someone and let the radio play, then when I want to restart the car the radio reboot. Is there a way to change the wiring so it's not doing this. I have a 2005 mustang and the PAC module. Thanks, Quote Link to post Share on other sites
JasonH Posted January 15, 2011 Report Share Posted January 15, 2011 It COULD be done with a relay that would temporally switch the AVIC from ignition to constant power when the key is turned. It might even be possible to do it with just a capacitor. However, it's really more trouble then it's worth. Basically when the key goes into the start position, the car is turning off anything that's running on ignition power to allow the starter motor to pull as much current as possible. Quote Link to post Share on other sites
rgarjr Posted January 15, 2011 Report Share Posted January 15, 2011 Having a good healthy battery can prevent the head unit from turning off during crank. Quote Link to post Share on other sites
JasonH Posted January 16, 2011 Report Share Posted January 16, 2011 Having a good healthy battery can prevent the head unit from turning off during crank. Most new cars (2005 Mustang included) actually turn off ACC power when the key is turned to the start position. Quote Link to post Share on other sites
VBLUE42 Posted January 16, 2011 Report Share Posted January 16, 2011 Or you could just leave the car running. Quote Link to post Share on other sites
1loudls Posted January 25, 2011 Report Share Posted January 25, 2011 true, most cars do trun off ACC during the crank cycle. a bigger issue is while the car is cranking, the availible voltage is usually a lot lower than normal, and can drop down to a dangerious level for any type of computer device such as any AVIC, having the unit try to stay on while the starter is running could definitely brick your unit up. i say live with it or leave the car running. however, another one of our members made up a circuit that uses a few small rechargeable batteries to stableize the voltage during cranking. he put up diagrams showing how to build it. Quote Link to post Share on other sites
1loudls Posted January 25, 2011 Report Share Posted January 25, 2011 found it http://avic411.com/index.php?/topic/19417-ignition-mod-on-f900bt/page__view__findpost__p__139910 Quote Link to post Share on other sites
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