05 645Ci backup light replacement

Hi guys & gals. I'm new to Bimmerfest and am very thankful to have a DIY Forum to get information on upkeeping and avoiding expensive dealer repair costs. Yesterday I received the alert message that I have a reverse light malfunction indicating a bad bulb. Has anyone replaced this themselves? I understand it is mounted in the bumper but does it require the bumper to be removed to get to it? Sounds like an expensive repair to have it done. I wonder if it is more trouble than it's worth to just have it replaced by the dealer. Thanks for any info provided.