Yes, you should. But, even if the construction of the Bosch packs is not up to their usual standards (especially the pannier mounted packs are terrible from a water ingestion POV) the BMS is top notch and it tends to shut down the battery if it detects any serious problems, far better than most el-cheapo BMS.

Look for any traces of moisture on the boards and the cells and if you spot any it is probably safer to discard the pack or have it rebuilt. The seals need very careful attention, less so in the frame (vertically mounted) packs. The powertubes are much better from an engineering point of view.