dweb4

Hello have 14 CLS and had the rear sub amp go bad with loud cracking sound and slight electrical burning smell. Troubleshooting found out the amp for the sub is cooked. The rest of the sound system and command system is fine. Anyone know if replacing the amp is good enough or do I need to replace the subwoofer and amp. Also anyone have any info on how to access the amp and what's need to remove to get to the amp in the rear deck behind the seats. Any help and info is appreciated greatly.