If you want to prevent it from ever happening again: 1) As others have suggested, remove the drain flaps from the rear drains. 2) Replace the perimeter seal for the sunroof glass, its adhered to the body. You have to remove the front and rear glass to do so. The rear glass is tricky. Reverse Light Switch Replacement Taillight Wiring Repair E61 Wagon Taillights Replacement Third Brake and License Plate Lights Replacement. Detailing / Painting - BMW E60 DIY. Detailing Your Car Wheel Curb Rash Removal Paint Scratch Removal Orbital Buffer Polishing Using Porter Cable Orbital Buffer. Cooling - BMW E60 DIY. Coolant Pump Replacement First, put your BMW key in the ignition, rapidly turning it to position 1. Quickly do this 5 times in a row. Then, take your key out of the ignition. Press the BMW logo on your BMW key fob 3 times while holding down the unlock button. Let go of the unlock button after the third time you’ve pressed the BMW logo. Also maybe look into what is discharging the battery if you replace the battery it's pointless. so I would do this. 1> Go into INPA and pull the battery details. 2> Have the battery tested. 3> replace (if faulty) and calibrate. 4> if battery is good work out what is the source of the current drain. 5 steps to change battery in BMW key fob. Step 1: On the backside of the key, press the small button and pull on the handle to access the metallic key in the key fob. Step 2: Where you have removed the key you will see a small gap where you will input the screwdriver and turn it to pop open the cover. Step3: Once the cover is removed, you will Opus IVS has released details of diagnostic support its IVS 360 TM team offered to a technician requiring assistance with a BMW suffering remote central locking failure from the remote fob. The advice offered by Opus IVS applies to BMW E61 and E91 models. Possible causes may include broken wiring going through boot loom, CAS module failure and 1132 posts · Joined 2012. #5 · Mar 1, 2016 (Edited) Part of the crash safety system in these cars is that there's an airbag-style explosive charge in the battery cable, near the battery. BST = Battery Safety Terminal. If there's a serious-enough crash, it'll blow out the battery cable, so there's no chance of a spark igniting any spilled fuel. Cause #2: In the case of a customer complaint, before connecting to the BMW Diagnosis System, duplicate the “no-crank” complaint. For comfort access-equipped vehicles, rule out specific comfort access-related issues by inserting the remote key in the key holder. Carry out a short test but do not delete the fault memory. Automobile Locksmith Rechargeable Battery LIR2025 for BMW remote key repair battery replacement. B-M-W 3 series 5 series 7 series X3 X5 E46 E38 E39 E53 E60 E61 in this video i show you how to replace the key door lock cylinder. the bmw door key isnt made to be used every single say, its made for emergencies when the BigGjv.