What's the BMW X5 e70 pdc module location?

The BMW X5 E70 does not have an independent park distance control (PDC) module. Instead, its functionality is integrated into the junction box electronics (JBE), which are the executing control unit for the central locking system. It's very likely than an issue with Your park distance control can be traced back to the JBE in one way or another. The JBE can be found behind the glove box, and is a portion of the junction box or fuse panel. It's exceedingly unlikely that the JBE will fail without producing more errors than just the PDC, so if this is the issue that You're facing, You'd do best to attempt to trace the source of the problem back to the cables or wiring harnesses, which are known to fail.