BMW ULF Bluetooth Module ( Brain ) Model 84 10 9 154 358 current production 13th generation, tested and Working Prefectly . This ULF module is used in the following BMWs BMW 7 Series 1995-2001 E38 BMW 5 Series 1996-2003 E39 BMW 3 Series 1999-2006 E46 BMW X5 1999-2006 E53 BMW X3 All years BMW Z4 All years BMW Z8 All years Mini Cooper with navigation and multifunctional steering wheel Range Rover 2003-2004 The BMW ULF module is the brain of the BMW Bluetooth system. This ULF module provides the Bluetooth connection to your cellular phone, and voice control of your Bluetooth phone and navigation system (if equipped). The BMW ULF module functions are described in detail in this Link. This ULF module is a highly recommended upgrade in our Bluetooth Retrofit kits, as the performance is much greater than the older Bluetooth modules. The new 13th generation ULF module started production in May 2007! with significant hardware and software changes for optimizing the hand-free audio quality, speeding up the connectivity between Bluetooth devices and support for additional Bluetooth phones. This ULF module has been widely used in many BMW retrofits although is not available for purchase from US BMW dealers. Purchases only can be made in large quantity international shipments such as BMW Germany. We have found the 84 10 9 154 358 ULF module to be a significantly better performing ULF module than the previous generations and would recommend this version to anyone considering Bluetooth. The 13th generation ULF modules, supports a large phonebook capacity of 1,000 names in the address book vrs only 500 names in the previous generation ULF modules. A noticeable difference can be found when pairing new devices or entering the vehicle as the new generation ULF pairs to your phone quicker The 13th Generation ULF module is the latest BMW Bluetooth module version that supports the Apple iPod , iPad , and iPhone . Check out my other Auctions for more BMW retrofit parts .