Intelligent Battery System TIP for E60-E61

Car Commando Tip of the Day:
For vehicles produced before 12/2006:
If terminal 15 can no longer be switched using the START-STOP button, or the electrical steering interlock (ELV) cannot be unlocked, check IBS (Intelligent Battery System) cable (located on the negative post of the battery) for traces of dampness.
First, extract & examine DTC fault code memory entries regarding the IBS.
IBS can be defective due to moisture, and keep the wake-up line at high level. In this case, replace the IBS cable.