{"product_id":"land-rover-discovery-4-l319-usb-audio-stereo-control-unit-module-ah42-18c941-ag","title":"Land Rover Discovery 4 L319 USB Audio Stereo Control Unit Module AH42-18C941-AG","description":"\u003cp\u003e#73\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eGENUINE LAND ROVER DISCOVERY 4 L319 USB AUDIO STEREO MULTIMEDIA CONTROL MODULE AH42-18C941-AG LR019222\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eGenuine used Land Rover \/ Harman Becker USB audio multimedia interface control module, suitable for selected Land Rover Discovery 4 L319 vehicles equipped with the corresponding factory audio \/ multimedia system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis module forms part of the vehicle’s factory infotainment system and provides the electronic interface used for compatible USB \/ portable audio \/ multimedia functions.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eEngineering Number: AH42-18C941-AG\u003c\/p\u003e\u003cp\u003eAlternative Number: AH4218C941AG\u003c\/p\u003e\u003cp\u003eAlternative Format: AH42 18C941 AG\u003c\/p\u003e\u003cp\u003eLand Rover OE Cross-Reference: LR019222\u003c\/p\u003e\u003cp\u003ePart Type: USB Audio Control Module \/ Multimedia Interface ECU\u003c\/p\u003e\u003cp\u003eSystem: Factory Audio \/ Infotainment \/ Multimedia\u003c\/p\u003e\u003cp\u003eApplication: USB \/ Portable Audio Interface\u003c\/p\u003e\u003cp\u003ePrimary Vehicle: Land Rover Discovery 4\u003c\/p\u003e\u003cp\u003eChassis: L319\u003c\/p\u003e\u003cp\u003eDonor Year: 2010\u003c\/p\u003e\u003cp\u003eManufacturer: Land Rover \/ JLR \/ Harman Becker application\u003c\/p\u003e\u003cp\u003eCondition: Genuine Used OEM Part\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCOMPATIBILITY\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe exact AH42-18C941-AG \/ AH4218C941AG module is directly documented on the Land Rover Discovery 4 L319.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eLAND ROVER DISCOVERY 4 \/ DISCOVERY IV \/ LR4 L319\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eApprox. 2009–2016\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDocumented applications include early 2010 Discovery 4 vehicles as well as later L319 vehicles equipped with the corresponding factory multimedia system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePotential applications include selected:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Discovery 4 2.7 TDV6 – 276DT\u003c\/p\u003e\u003cp\u003e• Discovery 4 3.0 TDV6 – 306DT\u003c\/p\u003e\u003cp\u003e• Discovery 4 3.0 SDV6 – 306DT\u003c\/p\u003e\u003cp\u003e• Discovery 4 3.0 Petrol – selected markets\u003c\/p\u003e\u003cp\u003e• Discovery 4 5.0 V8 Petrol – 508PN – selected markets\u003c\/p\u003e\u003cp\u003e• LR4 North American specification vehicles\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe exact AH42-18C941-AG number is documented specifically on 2010 Discovery 4 L319 applications.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDISCOVERY 4 3.0 TDV6 \/ SDV6\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThere is particularly strong used-parts evidence for this module on 3.0 TDV6 Discovery 4 vehicles.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDocumented examples include:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Discovery 4 L319 3.0 TDV6\u003c\/p\u003e\u003cp\u003e• Discovery 4 L319 3.0 SDV6\u003c\/p\u003e\u003cp\u003e• 2010 Discovery 4\u003c\/p\u003e\u003cp\u003e• 2011 Discovery 4\u003c\/p\u003e\u003cp\u003e• Additional 2009–2016 Discovery 4 multimedia-equipped vehicles\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eRANGE ROVER SPORT L320 – ADDITIONAL COMPATIBILITY\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe exact AH42-18C941-AG \/ AH4218C941AG module is also extensively documented on:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eRange Rover Sport L320\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eParticularly around the 2010–2013 model period.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePotential applications include selected:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• 3.0 TDV6\u003c\/p\u003e\u003cp\u003e• 3.0 SDV6\u003c\/p\u003e\u003cp\u003e• 3.6 TDV8\u003c\/p\u003e\u003cp\u003e• 5.0 V8\u003c\/p\u003e\u003cp\u003e• 5.0 Supercharged V8\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe vehicle must have the corresponding factory infotainment \/ USB audio system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eRANGE ROVER L322\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe AH42-18C941-AG module is also advertised and cross-referenced for selected Range Rover L322 applications from the same JLR infotainment generation.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePotential applications include selected approximately:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e2010–2012 Range Rover L322\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eHowever, L322 compatibility should be confirmed by matching the AH42-18C941-AG \/ LR019222 number and electrical connections.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIMPORTANT: Engine size is not the primary compatibility factor for this component.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCompatibility depends mainly on:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Factory audio system\u003c\/p\u003e\u003cp\u003e• Infotainment specification\u003c\/p\u003e\u003cp\u003e• USB\/media equipment\u003c\/p\u003e\u003cp\u003e• Vehicle production date\u003c\/p\u003e\u003cp\u003e• Electrical connectors\u003c\/p\u003e\u003cp\u003e• Module hardware\/software generation\u003c\/p\u003e\u003cp\u003e• Original engineering\/OE number\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eOE \/ ENGINEERING NUMBER INFORMATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePrimary number:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAH42-18C941-AG\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAlso written as:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAH4218C941AG\u003c\/p\u003e\u003cp\u003eAH4218C941-AG\u003c\/p\u003e\u003cp\u003eAH42 18C941 AG\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA documented Land Rover OE cross-reference is:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eLR019222\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eWhen replacing the module, the safest method is to match the original AH42-18C941-AG engineering number directly.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eTECHNICAL INFORMATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis component is part of the factory Land Rover multimedia \/ audio interface system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIts role is to provide an electronic interface between compatible external media connections and the vehicle’s factory infotainment architecture.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDepending on vehicle specification, the system can support functions associated with:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• USB audio input\u003c\/p\u003e\u003cp\u003e• Portable media devices\u003c\/p\u003e\u003cp\u003e• Digital audio\/media connection\u003c\/p\u003e\u003cp\u003e• iPod integration on compatible systems\u003c\/p\u003e\u003cp\u003e• Factory stereo\/audio system\u003c\/p\u003e\u003cp\u003e• Multimedia source selection\u003c\/p\u003e\u003cp\u003e• Vehicle infotainment system\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe module processes the appropriate media\/interface signals and communicates with the vehicle’s factory audio system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eUSB \/ PORTABLE AUDIO SYSTEM\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eOn suitably equipped Discovery 4 vehicles, external media devices can be connected to the vehicle’s infotainment system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDepending on the vehicle’s specification and connected device, the system can allow functions such as:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Playing music from compatible USB media\u003c\/p\u003e\u003cp\u003e• Portable audio playback\u003c\/p\u003e\u003cp\u003e• iPod\/media-device integration\u003c\/p\u003e\u003cp\u003e• Track selection through the factory infotainment system\u003c\/p\u003e\u003cp\u003e• Audio source selection\u003c\/p\u003e\u003cp\u003e• Playback through the vehicle’s factory speakers\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAvailable functionality varies according to the infotainment generation and vehicle specification.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eHARMAN BECKER AUDIO SYSTEM\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe AH42-18C941-AG module is widely identified in the used-parts market as a Harman Becker audio\/USB interface module.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIt forms part of the wider factory audio architecture rather than being the main audio amplifier itself.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eTHIS IS NOT THE MAIN AMPLIFIER.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDiscovery 4 vehicles can contain several separate audio\/infotainment modules, including:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Audio amplifier\u003c\/p\u003e\u003cp\u003e• Radio\/tuner components\u003c\/p\u003e\u003cp\u003e• Bluetooth\/telephone module\u003c\/p\u003e\u003cp\u003e• DAB receiver where equipped\u003c\/p\u003e\u003cp\u003e• USB\/media interface module\u003c\/p\u003e\u003cp\u003e• Display\/touchscreen\u003c\/p\u003e\u003cp\u003e• Rear Seat Entertainment components where equipped\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe AH42-18C941-AG should therefore be identified by its exact engineering number.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCOMMON SYMPTOMS \/ REASONS FOR REPLACEMENT\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• USB input not working\u003c\/p\u003e\u003cp\u003e• USB device not recognised\u003c\/p\u003e\u003cp\u003e• iPod\/media device not recognised\u003c\/p\u003e\u003cp\u003e• No audio from connected USB device\u003c\/p\u003e\u003cp\u003e• Multimedia source unavailable\u003c\/p\u003e\u003cp\u003e• Intermittent USB connection\u003c\/p\u003e\u003cp\u003e• Audio source disconnecting unexpectedly\u003c\/p\u003e\u003cp\u003e• Infotainment unable to communicate with media interface\u003c\/p\u003e\u003cp\u003e• Internal module failure\u003c\/p\u003e\u003cp\u003e• Damaged electrical connector\u003c\/p\u003e\u003cp\u003e• Water\/moisture damage\u003c\/p\u003e\u003cp\u003e• Replacement during infotainment repair\u003c\/p\u003e\u003cp\u003e• Module missing following previous vehicle repairs\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIMPORTANT DIAGNOSTIC INFORMATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA non-working USB or multimedia input does not automatically mean this module has failed.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore replacement, check:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• USB socket\u003c\/p\u003e\u003cp\u003e• USB connection cable\u003c\/p\u003e\u003cp\u003e• Vehicle fuses\u003c\/p\u003e\u003cp\u003e• Module power supply\u003c\/p\u003e\u003cp\u003e• Ground connections\u003c\/p\u003e\u003cp\u003e• Electrical connectors\u003c\/p\u003e\u003cp\u003e• Wiring continuity\u003c\/p\u003e\u003cp\u003e• Infotainment system operation\u003c\/p\u003e\u003cp\u003e• Compatible media device\u003c\/p\u003e\u003cp\u003e• Audio source settings\u003c\/p\u003e\u003cp\u003e• Related infotainment modules\u003c\/p\u003e\u003cp\u003e• Vehicle diagnostic fault codes\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eTesting with another known-compatible USB\/media device is recommended before condemning the module.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eVEHICLE NETWORK \/ DIAGNOSTICS\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe module operates as part of the vehicle’s integrated multimedia\/electrical architecture.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eSuitable Land Rover diagnostic equipment can be used to check:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Module communication\u003c\/p\u003e\u003cp\u003e• Stored infotainment fault codes\u003c\/p\u003e\u003cp\u003e• Network communication\u003c\/p\u003e\u003cp\u003e• Power supply faults\u003c\/p\u003e\u003cp\u003e• Configuration issues\u003c\/p\u003e\u003cp\u003e• Related multimedia components\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIf several infotainment functions have failed simultaneously, diagnosis of the complete system is recommended before replacing individual modules.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePROGRAMMING \/ CODING\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFor a replacement module with the same AH42-18C941-AG \/ LR019222 specification, additional programming may not always be necessary.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eHowever, because the module forms part of the vehicle’s integrated infotainment system, vehicle configuration\/software differences can affect operation.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDepending on donor and recipient vehicle specification, diagnostic configuration or initialisation may be required.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFor this reason, installation by someone familiar with Land Rover\/JLR infotainment systems is recommended.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eINSTALLATION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore fitting, compare:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• AH42-18C941-AG number\u003c\/p\u003e\u003cp\u003e• LR019222 where applicable\u003c\/p\u003e\u003cp\u003e• Electrical connectors\u003c\/p\u003e\u003cp\u003e• Connector pin arrangement\u003c\/p\u003e\u003cp\u003e• Module casing\u003c\/p\u003e\u003cp\u003e• Mounting points\u003c\/p\u003e\u003cp\u003e• Vehicle infotainment specification\u003c\/p\u003e\u003cp\u003e• USB\/media equipment\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDisconnect the vehicle electrical system according to the correct Land Rover workshop procedure before removing or installing electronic modules.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAfter installation, test:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• USB connection\u003c\/p\u003e\u003cp\u003e• Media-device recognition\u003c\/p\u003e\u003cp\u003e• Audio playback\u003c\/p\u003e\u003cp\u003e• Source selection\u003c\/p\u003e\u003cp\u003e• Infotainment operation\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIMPORTANT COMPATIBILITY NOTE\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eLand Rover used several different multimedia\/audio modules throughout Discovery 4 production.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA module that looks physically identical is not necessarily compatible.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore ordering, please match:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAH42-18C941-AG\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAH4218C941AG\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eand where applicable:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eLR019222\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAlso compare:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Electrical connectors\u003c\/p\u003e\u003cp\u003e• Connector pins\u003c\/p\u003e\u003cp\u003e• Hardware configuration\u003c\/p\u003e\u003cp\u003e• Factory infotainment system\u003c\/p\u003e\u003cp\u003e• Vehicle production year\u003c\/p\u003e\u003cp\u003e• Original module label\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eMatching AH42-18C941-AG directly with the original module is the safest method of confirming compatibility.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCONDITION\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eGenuine used Land Rover OEM USB Audio \/ Multimedia Control Module.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eRemoved from a Land Rover Discovery 4 L319.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eNormal cosmetic signs of previous installation, use, removal and storage may be present.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePlease inspect all listing photographs carefully and compare the:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e• Part number\u003c\/p\u003e\u003cp\u003e• Module label\u003c\/p\u003e\u003cp\u003e• Electrical connectors\u003c\/p\u003e\u003cp\u003e• Connector pins\u003c\/p\u003e\u003cp\u003e• Casing\u003c\/p\u003e\u003cp\u003e• Mounting points\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ewith your original unit before ordering.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIdeal genuine replacement for a faulty or damaged factory USB audio \/ multimedia interface module on compatible Land Rover Discovery 4 L319, Range Rover Sport L320 and selected Range Rover L322 vehicles where AH42-18C941-AG \/ AH4218C941AG \/ LR019222 and the infotainment configuration match the original unit.\u003c\/p\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Land Rover\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMileage:\u003c\/strong\u003e A\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e AH42-18C941-AG\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade:\u003c\/strong\u003e A\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Identification Number (VIN):\u003c\/strong\u003e SALLAAAG3BA559737\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReference OE\/OEM Number:\u003c\/strong\u003e AH42-18C941-AG\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Land Rover","offers":[{"title":"Default Title","offer_id":55000381456711,"sku":"158287618744","price":14.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/1528\/3527\/files\/10_33ae2617-8c09-42e5-8930-0eba2e0955b7.jpg?v=1789305452","url":"https:\/\/spares4repairs.store\/products\/land-rover-discovery-4-l319-usb-audio-stereo-control-unit-module-ah42-18c941-ag","provider":"Spares 4 Repairs","version":"1.0","type":"link"}