{"product_id":"audi-relais-640-8e0907307f-servotronic-steuergerat-a4-b7-avant-cabrio-7038900309","title":"Audi Relay 640 8E0907307F Servotronic Control Unit A4 B7 Avant Cabrio 7038900309","description":"\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eKFZTeile-Thot – Genuine used part\u003c\/div\u003e\n\u003cdiv\u003eAudi Relay 640 8E0907307F Servotronic Control Unit A4 B7 Avant Cabrio 7038900309\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003eGenuine Audi Servotronic control unit 640 (8E0 907 307 F, ZF 7038 900 309) for A4 B7 and A4 Cabriolet – replaces 8E0 907 307 D.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e✓\u003c\/div\u003e\n\u003cdiv\u003eCondition honestly described\u003c\/div\u003e\n\u003cdiv\u003ePhotos show the actual part\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e✓\u003c\/div\u003e\n\u003cdiv\u003eGenuine part\u003c\/div\u003e\n\u003cdiv\u003enot aftermarket\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e✓\u003c\/div\u003e\n\u003cdiv\u003eThis exact part\u003c\/div\u003e\n\u003cdiv\u003eno stock photos\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e✓\u003c\/div\u003e\n\u003cdiv\u003eShipped from Germany\u003c\/div\u003e\n\u003cdiv\u003edaily shipping on business days\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eVehicle system and function\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003eControl unit in a relay form factor for speed-dependent steering assistance (Servotronic). It converts the speed signal from the ABS into a control signal for the Servotronic valve on the steering box: when maneuvering, the car steers lightly; at higher speeds the steering becomes firmer. The unit cannot be read out with diagnostic testers.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eInstallation location:\u003c\/span\u003e Relay carrier above the onboard electrical system control unit under the dashboard on the driver's side.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eCondition:\u003c\/span\u003e Used genuine part with normal signs of use on the housing (label F1 ZFLS Servotronic, ZF 7038 900 309, Hella 5DS 009 470-09, Made in Germany). Label intact and slightly yellowed, housing with fine scratches, blade terminals matte.\u003c\/div\u003e\n\u003cdiv\u003eHow to recognize a defective part\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e●\u003c\/span\u003e Steering too light or nervous at higher speeds\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e●\u003c\/span\u003e Steering too heavy when stationary and when maneuvering\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003cdiv\u003ePart numbers\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" border=\"0\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003e8E0 907 307 F \/ 8E0907307F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay number\u003c\/td\u003e\n\u003ctd\u003e640\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZF Lenksysteme\u003c\/td\u003e\n\u003ctd\u003e7038 900 309 \/ 7038900309\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHella\u003c\/td\u003e\n\u003ctd\u003e5DS 009 470-09\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003e8E0 907 307 D (also 640)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv\u003eFits the following vehicles\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003eOn the A4 Cabriolet based on the B6 (8H7, 2002–2005), the parts catalog sometimes lists a different number – please compare the part number on your old part. If the car steers lightly in one direction and heavily in the other, the fault usually lies with the steering box, not the control unit.\u003c\/div\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" border=\"0\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel series\u003c\/td\u003e\n\u003ctd\u003eModels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi A4 B7 (8E) sedan and Avant, also quattro\u003c\/td\u003e\n\u003ctd\u003ewith Servotronic, 2004–2008 (from VIN 8E-5-400 001)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi A4 Cabriolet B7 (8H)\u003c\/td\u003e\n\u003ctd\u003ewith Servotronic, 2005–2009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeat Exeo (3R2)\u003c\/td\u003e\n\u003ctd\u003ewith Servotronic, documented for 2.0 TSI among others\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv\u003eImportant distinction – please check before buying\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e⚠ Not S4 \/ RS4\u003c\/div\u003e\n\u003cdiv\u003eS4 B7 has 8E0 907 307 E \/ G, RS4 B7 has 8E0 907 307 C (relay 642) – different characteristic curve.\u003c\/div\u003e\n\u003cdiv\u003e⚠ Not A4 B6\u003c\/div\u003e\n\u003cdiv\u003eThe A4 B6 up to VIN 8E-5-400 000 has relay 629 or 638.\u003c\/div\u003e\n\u003cdiv\u003e⚠ Does not fit:\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eAudi S4 \/ RS4 B7\u003c\/li\u003e\n\u003cli\u003eAudi A4 B6 (relay 629 \/ 638)\u003c\/li\u003e\n\u003cli\u003eAudi A4 B8 (8K) – no Servotronic relay there\u003c\/li\u003e\n\u003cli\u003eAudi A6 C5 \/ C6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003eNot sure which version your vehicle has? Just send us your VIN before buying and we will check it for you free of charge.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eFAQ\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eHow do I know if the relay fits?\u003c\/div\u003e\n\u003cdiv\u003eBy the number on the relay cover (640) and the part number 8E0 907 307 F on the housing – please compare both with your old part.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eScope of delivery\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003eScope of delivery: see product photos.\u003c\/div\u003e\n\u003c!--nur-ebay--\u003e\u003cdiv\u003e\n\u003cdiv\u003eAny questions?\u003c\/div\u003eIf you have any questions or need additional information, we are always happy to help by message or phone. If you are dissatisfied with the item described, send us a message. If you are ever not satisfied with the item you bought, please contact us before leaving a neutral or negative review. We will surely find a solution together.\u003c\/div\u003e\n\u003c!--\/nur-ebay--\u003e\n\u003c\/div\u003e\u003cp\u003e\u003cstrong\u003eDoes this part fit your car?\u003c\/strong\u003e Send us your VIN and model year – we will check it free of charge: \u003ca href=\"\/en\/pages\/contact?thema=Ersatzteil\"\u003econtact form\u003c\/a\u003e or \u003ca href=\"mailto:thot.kfzteile@gmail.com\"\u003ethot.kfzteile@gmail.com\u003c\/a\u003e.\u003c\/p\u003e","brand":"Audi","offers":[{"title":"Default Title","offer_id":55714149335369,"sku":"RL-640","price":49.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/5344\/8777\/files\/57_5bf31438-d117-4cb1-9020-72878d64b1d2.jpg?v=1792837246","url":"https:\/\/kfzteile-thot.de\/en\/products\/audi-relais-640-8e0907307f-servotronic-steuergerat-a4-b7-avant-cabrio-7038900309","provider":"KFZTeile-Thot","version":"1.0","type":"link"}