your having trouble with it finding the split in the songs, if it is pre 2002 then you might be also having
trouble with the size of the cdroms you burn with. the older ones only seen 650 mb cdroms, their leaser light
could not move out to the end of the disk far enough to see any more then 650,mb's if you are burning audio disks
and having it skip songs that is more likely the reason, i had the same thing happen on cheap portable cd players.
they could see the whole 700 mb's but could not split the tracks if less then 2 seconds of space was between them.
and if the cd had more then 21 songs on it, then even 2 seconds was not enough for the cheap portable players back then to play all the songs. they would skip until they found a split they could see was a real split.
also you have trouble back then on the old cdrom players that some chemicals used on the burnable cd's were too think for the leaser light to get a proper read on the data, so it would not play them, make sure you buy the disks' that is recomended by your car's stereo disk player manufacture or barrow a few different makes of cdroms
from different friends that have burned audio cd's and see which one of theirs works, then buy that brand to burn yours on.
also since it is in a car, or truck, you might have dust in it, get a lens cleaner disk for the cdrom players and run it a time or two all it does is play like a cdrom but has a few small brushes placed on the disk in places that will
hit the lens as it goes around and brush off the dust.
some times that dust is sticky so a couple times to get it off the lens is needed, even more so if you smoke with the windows up. that smoke just sticks to everything and is bad for you as well as the computer equipment.
thats the only things i can remember that might cause your error in the car unit. and those are easy ones to do, not like removing it and adding in a new one.

your having trouble with it finding the split in the songs, if it is pre 2002 then you might be also having
trouble with the size of the cdroms you burn with. the older ones only seen 650 mb cdroms, their leaser light
could not move out to the end of the disk far enough to see any more then 650,mb's if you are burning audio disks
and having it skip songs that is more likely the reason, i had the same thing happen on cheap portable cd players.
they could see the whole 700 mb's but could not split the tracks if less then 2 seconds of space was between them.
and if the cd had more then 21 songs on it, then even 2 seconds was not enough for the cheap portable players back then to play all the songs. they would skip until they found a split they could see was a real split.
also you have trouble back then on the old cdrom players that some chemicals used on the burnable cd's were too think for the leaser light to get a proper read on the data, so it would not play them, make sure you buy the disks' that is recomended by your car's stereo disk player manufacture or barrow a few different makes of cdroms
from different friends that have burned audio cd's and see which one of theirs works, then buy that brand to burn yours on.
also since it is in a car, or truck, you might have dust in it, get a lens cleaner disk for the cdrom players and run it a time or two all it does is play like a cdrom but has a few small brushes placed on the disk in places that will
hit the lens as it goes around and brush off the dust.
some times that dust is sticky so a couple times to get it off the lens is needed, even more so if you smoke with the windows up. that smoke just sticks to everything and is bad for you as well as the computer equipment.
thats the only things i can remember that might cause your error in the car unit. and those are easy ones to do, not like removing it and adding in a new one. :D