2003 audi a4 PRND lights flashing and reverse goes limp

SOURCE: audi dash lights

If it is the display for the gears flashing, this indicates a fault with the gearbox system, this is more common on multitronic gearbox's

SOURCE: Gear Selection Audi A4

GEAR LINKAGE ADJUSTMENT IS UNDER GAITER PLUS REMOVE ASHTRAY .......BUT I WOULD CHECK FOR WORN OR DAMAGED GEAR LINKAGES ....CLUTCH FAULT WOULD BE THE NEXT THING

SOURCE: Audi A4 need to replace rear brake light on audi a4

Inside the boot is a plastic cap embeded in the boot liner. Remove the cap to reveal a screw. Undo the screw and the whole rear light cluster will come away in a sideways and not rearward direction to reveal all of the bulbs. Hope this helps.

SOURCE: AUDI A4 2003 1.8T TRANSMISSION CONTROL UNIT

i have a transmition problem on a 2003 audi a4 1.8t whit 44000klm.
audi is changing transmition at no cost but have to paye for labor

SOURCE: last night the information display was flashing

This is just to warn you that you have been driving for more than 2 hours and you might need a break. The solution is to press the right hand side (WIPER HANDLE) lower button and the flashing light will disengage. Good luck.