{"product_id":"land-rover-discovery-4-2010-l319-bluetooth-control-unit-ah42-10f845-aa","title":"LAND ROVER DISCOVERY 4 2010 L319 BLUETOOTH CONTROL UNIT AH42-10F845-AA","description":"\u003cp\u003e#76\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eGenuine Land Rover Discovery 4 L319 Bluetooth Telephone Hands-Free Control Unit – AH42-10F845-AA \/ LR025842 – 2010\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eGenuine Land Rover\/JLR used Bluetooth control module \/ telephone hands-free control unit, suitable for selected Land Rover Discovery 4 L319 models equipped with the corresponding factory Bluetooth telephone and infotainment system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis electronic module forms part of the vehicle’s factory telephone, Bluetooth and multimedia system, allowing compatible mobile phones to communicate wirelessly with the vehicle for hands-free calling and associated telephone functions.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePart Number: AH42-10F845-AA\u003c\/p\u003e\u003cp\u003eAlternative Number Format: AH4210F845AA\u003c\/p\u003e\u003cp\u003eLand Rover OE \/ Service Number: LR025842\u003c\/p\u003e\u003cp\u003ePart Type: Bluetooth Control Module \/ Telephone Control Unit \/ Hands-Free Module\u003c\/p\u003e\u003cp\u003eModule Type: Bluetooth Phone Module \/ Telematics Interface\u003c\/p\u003e\u003cp\u003eSystem: Factory Infotainment \/ Telephone System\u003c\/p\u003e\u003cp\u003eApplication: Bluetooth Mobile Phone Connectivity \/ Hands-Free Calling\u003c\/p\u003e\u003cp\u003eDonor Application: 2010 Land Rover Discovery 4 L319 TDV6 HSE\u003c\/p\u003e\u003cp\u003eDonor Engine: 3.0 TDV6 – 306DT\u003c\/p\u003e\u003cp\u003eDonor Gearbox: ZF 6HP28 Automatic\u003c\/p\u003e\u003cp\u003eManufacturer: Land Rover \/ JLR\u003c\/p\u003e\u003cp\u003eCondition: Used Genuine Land Rover Part\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCOMPATIBILITY\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eLand Rover Discovery 4 – L319\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDirectly confirmed application:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Discovery 4 L319 – 2010\u003c\/p\u003e\u003cp\u003e• Discovery 4 TDV6 HSE\u003c\/p\u003e\u003cp\u003e• 3.0 TDV6 – 306DT\u003c\/p\u003e\u003cp\u003e• 5-door SUV\u003c\/p\u003e\u003cp\u003e• ZF 6HP28 automatic application\u003c\/p\u003e\u003cp\u003e• UK RHD application documented\u003c\/p\u003e\u003cp\u003e• Factory Bluetooth \/ telephone-equipped vehicle\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe exact AH42-10F845-AA module is documented as removed from a 2010 Discovery 4 TDV6 HSE with the 306DT engine.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eMODEL-YEAR COMPATIBILITY\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe AH42-10F845-AA module is particularly associated with early Discovery 4 vehicles.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eSpecialist Discovery technical information identifies:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAH42-10F845-AA – 2010 to 2011 Model Year\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eOther replacement-module sources document it on approximately:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e2010-2012 Discovery 4 \/ LR4\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eTherefore, the strongest application for this exact engineering number is the early Discovery 4 L319 Bluetooth system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eADDITIONAL LAND ROVER \/ RANGE ROVER COMPATIBILITY\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe same AH42-10F845-AA \/ LR025842 Bluetooth module is also documented on selected:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eRange Rover Sport – L320\u003c\/p\u003e\u003cp\u003e• Factory Bluetooth-equipped applications\u003c\/p\u003e\u003cp\u003e• Selected vehicles through approximately 2013\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eRange Rover – L322\u003c\/p\u003e\u003cp\u003e• Selected factory Bluetooth-equipped applications\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe LR025842 service reference is documented for:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Discovery 4 L319\u003c\/p\u003e\u003cp\u003e• Range Rover L322\u003c\/p\u003e\u003cp\u003e• Range Rover Sport L320\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eHowever, infotainment configuration and software can vary between models.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCross-model fitment should therefore not be assumed solely because the AH42-10F845-AA number is present.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eTECHNICAL INFORMATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe AH42-10F845-AA \/ LR025842 is an electronic Bluetooth communications module used within the factory JLR multimedia system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIts functions include:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Bluetooth mobile phone pairing\u003c\/p\u003e\u003cp\u003e• Wireless communication between compatible phones and the vehicle\u003c\/p\u003e\u003cp\u003e• Hands-free telephone calling\u003c\/p\u003e\u003cp\u003e• Communication with the factory infotainment system\u003c\/p\u003e\u003cp\u003e• Integration with the vehicle’s telephone menu\u003c\/p\u003e\u003cp\u003e• Transfer of telephone audio through the factory audio system\u003c\/p\u003e\u003cp\u003e• Communication with the vehicle microphone\u003c\/p\u003e\u003cp\u003e• Integration with steering-wheel telephone controls where fitted\u003c\/p\u003e\u003cp\u003e• Communication with other multimedia modules\u003c\/p\u003e\u003cp\u003e• Supporting factory telephone functions displayed through the infotainment system\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe module allows the driver to use compatible telephone functions without physically handling the mobile phone.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBLUETOOTH \/ TELEPHONE SYSTEM INFORMATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe complete factory Bluetooth telephone system can involve several components, including:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Bluetooth Control Module – AH42-10F845-AA\u003c\/p\u003e\u003cp\u003e• Factory microphone\u003c\/p\u003e\u003cp\u003e• Factory radio \/ infotainment head unit\u003c\/p\u003e\u003cp\u003e• Central infotainment display\u003c\/p\u003e\u003cp\u003e• Steering-wheel telephone controls\u003c\/p\u003e\u003cp\u003e• Audio amplifier depending on specification\u003c\/p\u003e\u003cp\u003e• Vehicle speakers\u003c\/p\u003e\u003cp\u003e• Multimedia wiring\u003c\/p\u003e\u003cp\u003e• MOST fibre-optic network on applicable systems\u003c\/p\u003e\u003cp\u003e• Associated vehicle control modules\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA failure elsewhere in the system can therefore produce symptoms similar to a faulty Bluetooth module.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eMOST FIBRE-OPTIC NETWORK INFORMATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eOn appropriately equipped Discovery 4 vehicles, the Bluetooth module forms part of the MOST multimedia fibre-optic network.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eMOST stands for:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eMedia Oriented Systems Transport\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe MOST network links various infotainment components together, potentially including:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Bluetooth telephone module\u003c\/p\u003e\u003cp\u003e• Audio amplifier\u003c\/p\u003e\u003cp\u003e• Radio\/audio components\u003c\/p\u003e\u003cp\u003e• Navigation components\u003c\/p\u003e\u003cp\u003e• Other multimedia control units depending on specification\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBecause MOST operates as a network\/ring, failure of an individual multimedia module can potentially affect communication with other components.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDiscovery 4 owners have specifically documented AH42-10F845-AA within the MOST system, including cases where Bluetooth functionality fails while the fibre-optic loop remains operational.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCOMMON SYMPTOMS OF A FAULTY BLUETOOTH MODULE\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eReplacement may be required due to:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Phone will not connect to the vehicle\u003c\/p\u003e\u003cp\u003e• Bluetooth pairing failure\u003c\/p\u003e\u003cp\u003e• Vehicle Bluetooth cannot be found by mobile phone\u003c\/p\u003e\u003cp\u003e• Previously paired phone suddenly stops connecting\u003c\/p\u003e\u003cp\u003e• Telephone menu not responding correctly\u003c\/p\u003e\u003cp\u003e• No hands-free telephone operation\u003c\/p\u003e\u003cp\u003e• Bluetooth connection repeatedly disconnecting\u003c\/p\u003e\u003cp\u003e• No telephone audio\u003c\/p\u003e\u003cp\u003e• Module communication fault\u003c\/p\u003e\u003cp\u003e• MOST multimedia communication problems\u003c\/p\u003e\u003cp\u003e• Internal electronic failure\u003c\/p\u003e\u003cp\u003e• Water \/ moisture damage\u003c\/p\u003e\u003cp\u003e• Damaged module connectors\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIMPORTANT DIAGNOSTIC INFORMATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA Bluetooth connection problem does not automatically mean the AH42-10F845-AA module has failed.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore replacement, check:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Mobile phone Bluetooth settings\u003c\/p\u003e\u003cp\u003e• Remove and re-pair the phone\u003c\/p\u003e\u003cp\u003e• Test with another compatible phone\u003c\/p\u003e\u003cp\u003e• Vehicle battery voltage\u003c\/p\u003e\u003cp\u003e• Bluetooth module power and ground\u003c\/p\u003e\u003cp\u003e• Module electrical connectors\u003c\/p\u003e\u003cp\u003e• MOST fibre-optic connections where applicable\u003c\/p\u003e\u003cp\u003e• Factory microphone\u003c\/p\u003e\u003cp\u003e• Infotainment system operation\u003c\/p\u003e\u003cp\u003e• Relevant fuses\u003c\/p\u003e\u003cp\u003e• Vehicle diagnostic fault codes\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIf multiple multimedia components are simultaneously unavailable, the MOST fibre-optic network should also be diagnosed rather than replacing the Bluetooth module immediately.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eWATER \/ MOISTURE DAMAGE INFORMATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eWater ingress has been reported as one possible cause of Bluetooth-module failure on these JLR infotainment systems.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eWhen replacing the module, inspect:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Module casing\u003c\/p\u003e\u003cp\u003e• Electrical connectors\u003c\/p\u003e\u003cp\u003e• Connector pins\u003c\/p\u003e\u003cp\u003e• MOST connections\u003c\/p\u003e\u003cp\u003e• Surrounding wiring\u003c\/p\u003e\u003cp\u003e• Module mounting area\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eLook for:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Water staining\u003c\/p\u003e\u003cp\u003e• Corrosion\u003c\/p\u003e\u003cp\u003e• Green deposits on terminals\u003c\/p\u003e\u003cp\u003e• Dampness\u003c\/p\u003e\u003cp\u003e• Previous water ingress\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIf moisture is found, the source should be corrected before installing another electronic module.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePART NUMBER INFORMATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePrimary engineering number:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAH42-10F845-AA\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAlternative formatting:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAH4210F845AA\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eLand Rover service\/OE reference:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eLR025842\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThese numbers are directly cross-referenced for the Discovery 4 Bluetooth control module.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eRELATED \/ EARLIER MODULE INFORMATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAnother Bluetooth module number encountered on earlier Land Rover\/Range Rover infotainment systems is:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e8H22-10F845-AA\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis should not automatically be treated as identical to AH42-10F845-AA.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDiscovery technical information specifically identifies:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAH42-10F845-AA – 2010\/2011 model-year vehicle\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDifferent engineering numbers can reflect changes in hardware, software or vehicle infotainment configuration.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFor a direct replacement, matching:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAH42-10F845-AA\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eis strongly recommended.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e2010 DISCOVERY 4 DONOR INFORMATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis exact module number has a documented donor application from:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eLand Rover Discovery 4 TDV6 HSE\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eManufactured: 2010\u003c\/p\u003e\u003cp\u003ePlatform: L319\u003c\/p\u003e\u003cp\u003eEngine: 306DT – 3.0 TDV6\u003c\/p\u003e\u003cp\u003eGearbox: ZF 6HP28 – 6-Speed Automatic\u003c\/p\u003e\u003cp\u003eBody: 5 Door\u003c\/p\u003e\u003cp\u003eSteering: Right-Hand Drive\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis provides particularly strong evidence for 2010 Discovery 4 L319 compatibility.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eINSTALLATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eInstallation should be performed according to the appropriate Land Rover\/JLR workshop procedure.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDuring installation:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Check the replacement module number\u003c\/p\u003e\u003cp\u003e• Inspect electrical connectors\u003c\/p\u003e\u003cp\u003e• Inspect MOST fibre connections where fitted\u003c\/p\u003e\u003cp\u003e• Check the mounting area for moisture\u003c\/p\u003e\u003cp\u003e• Check surrounding wiring\u003c\/p\u003e\u003cp\u003e• Secure the replacement module correctly\u003c\/p\u003e\u003cp\u003e• Reconnect all connections carefully\u003c\/p\u003e\u003cp\u003e• Restore battery connection according to JLR procedure\u003c\/p\u003e\u003cp\u003e• Test Bluetooth pairing\u003c\/p\u003e\u003cp\u003e• Test hands-free calling\u003c\/p\u003e\u003cp\u003e• Check microphone operation\u003c\/p\u003e\u003cp\u003e• Check steering-wheel telephone controls where fitted\u003c\/p\u003e\u003cp\u003e• Perform a diagnostic scan if required\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFibre-optic connections should be handled carefully and should not be sharply bent or contaminated.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePROGRAMMING \/ CODING\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eProgramming \/ Configuration May Be Required.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eUsed-module specialists specifically warn that AH42-10F845-AA may require additional programming when installed into another vehicle.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eOther suppliers also describe used AH42-10F845-AA modules as requiring programming.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eTherefore:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eProgramming Required: Vehicle dependent\u003c\/p\u003e\u003cp\u003eConfiguration Required: Vehicle dependent\u003c\/p\u003e\u003cp\u003eDiagnostic Check Recommended: Yes\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA direct like-for-like replacement carrying the same number provides the strongest compatibility, but it should not be guaranteed as universally plug-and-play.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eJLR-compatible diagnostic equipment may be required to configure or verify the replacement module.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIMPORTANT COMPATIBILITY NOTE\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore ordering, please compare:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAH42-10F845-AA\u003c\/p\u003e\u003cp\u003eAH4210F845AA\u003c\/p\u003e\u003cp\u003eLR025842\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAlso check:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Vehicle model\u003c\/p\u003e\u003cp\u003e• Vehicle model year\u003c\/p\u003e\u003cp\u003e• Factory Bluetooth\/telephone specification\u003c\/p\u003e\u003cp\u003e• Infotainment system generation\u003c\/p\u003e\u003cp\u003e• Existing module engineering number\u003c\/p\u003e\u003cp\u003e• Electrical connectors\u003c\/p\u003e\u003cp\u003e• MOST fibre connections where fitted\u003c\/p\u003e\u003cp\u003e• Module casing and mounting points\u003c\/p\u003e\u003cp\u003e• Vehicle configuration\u003c\/p\u003e\u003cp\u003e• Listing photographs\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDo not rely solely on “Land Rover Discovery 4” when ordering.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDifferent Bluetooth and infotainment modules were used across Discovery 4 production.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFor a 2010 Discovery 4 L319, AH42-10F845-AA \/ LR025842 is a directly documented application and matching this number with the original module provides the safest basis for compatibility.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCONDITION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eUsed Genuine Land Rover \/ JLR Electronic Module.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eNormal cosmetic marks, scratches and signs of previous installation may be present.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePlease inspect all listing photographs carefully for the exact AH42-10F845-AA identification, LR number, electrical connectors, fibre-optic connections, mounting points and overall condition.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAs this is a used electronic infotainment module, vehicle-specific programming\/configuration may be required after installation.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIdeal genuine Land Rover replacement Bluetooth telephone \/ hands-free control module for a compatible Land Rover Discovery 4 L319 factory infotainment system.\u003c\/p\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Land Rover\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e AH42-10F845-AA\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Land Rover","offers":[{"title":"Default Title","offer_id":54992731668807,"sku":"158284376662","price":55.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/1528\/3527\/files\/10_6e2082f0-faea-4786-adec-1822025aceed.jpg?v=1789220852","url":"https:\/\/spares4repairs.store\/products\/land-rover-discovery-4-2010-l319-bluetooth-control-unit-ah42-10f845-aa","provider":"Spares 4 Repairs","version":"1.0","type":"link"}