{"product_id":"mercedes-klima-relais-a0025451205-4-zylinder-w124-w201-190e-g-klasse-12v-gepruft","title":"Mercedes A\/C Relay A0025451205 4-Cylinder W124 W201 190E G-Class 12V Tested","description":"\u003cdiv style=\"background:#242833;border-radius:8px;padding:18px 20px;margin:0 0 14px;color:#ffffff;\"\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong style=\"color:#c69a3a;\"\u003eGenuine Mercedes-Benz A\/C relay A 002 545 12 05, 4-cylinder version, 12 V, for W124, W201 and G-Class.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#cfd3dc;\"\u003eGenuine Mercedes part (Kostal)  ·  Tested for function  ·  \u003cstrong style=\"color:#c69a3a;\"\u003eFits W124, W201 \u0026amp; G-Class (4-cylinder)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin:0 0 16px;\"\u003e\n\u003cspan style=\"display:inline-block;background:#f5f6f8;border:1px solid #e3e5e9;border-radius:999px;padding:5px 12px;margin:0 6px 6px 0;font-size:14px;\"\u003e✓ Function tested\u003c\/span\u003e\n\u003c\/p\u003e\n\u003cdiv style=\"background:#f5f6f8;border-left:4px solid #c69a3a;border-radius:8px;padding:14px 18px;margin:0 0 16px;\"\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003eCondition of this part\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eUsed genuine part, tested and functional. The housing shows light usage scratches and storage marks, the plug contacts a slight tarnish – no bent or missing pins, no cracks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eFunction and location\u003c\/h3\u003e\n\u003cp\u003eMore than a simple switching relay: this A\/C relay is a small control unit for the air conditioning system. It switches the magnetic clutch of the A\/C compressor while monitoring drive belt slip via a speed comparison between the compressor and engine (belt and compressor protection), switches off the compressor if the coolant temperature is too high or under full load\/kickdown, and delays switch-on after the engine starts.\u003c\/p\u003e\n\u003cp\u003eIt is installed in the relay\/electronics compartment in the engine bay, behind the starter battery, next to the fuel pump relay.\u003c\/p\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eHow can you tell an A\/C relay is defective?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe A\/C compressor no longer engages even though the refrigerant and electrics are fine\u003c\/li\u003e\n\u003cli\u003eBelt and compressor protection via speed monitoring stops working\u003c\/li\u003e\n\u003cli\u003eNo more compressor shutoff at excessive coolant temperature or under full load\/kickdown\u003c\/li\u003e\n\u003cli\u003eThe switch-on delay after engine start no longer occurs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eCompatible vehicles\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMercedes W201 (approx. 1985–1993):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e190 E 1.8\u003c\/li\u003e\n\u003cli\u003e190 E 2.0\u003c\/li\u003e\n\u003cli\u003e190 E 2.3\u003c\/li\u003e\n\u003cli\u003e190 D\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMercedes W124 (approx. 1985–1992):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e200, 200 E, 200 T, 200 TE, 200 D, 200 TD\u003c\/li\u003e\n\u003cli\u003e230 E, 230 E Cat, 230 CE, 230 CE Cat, 230 TE, 230 TE Cat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMercedes G-Class:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e200 GE, 230 G, 230 GE, 240 GD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGenuine\/OEM number of this relay: A 002 545 12 05, 4-cylinder version marked \"4 Zyl. Kli\", index level [09], made by Kostal. The six-cylinder version carries the number A 002 545 13 05, the V8 version A 002 545 18 05. For later M111 models such as the E 200 and E 220, 003 545 54 05 and others apply.\u003c\/p\u003e\n\u003cdiv style=\"background:#f5f6f8;border-left:4px solid #c69a3a;border-radius:8px;padding:14px 18px;margin:0 0 16px;\"\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003e⚠ Important: compare the part number before buying\u003c\/p\u003e\n\u003cp style=\"margin:0 0 6px;\"\u003eThe \"4 Zylinder\" marking on the relay is decisive. It identifies the correct version – relays with other markings are intended for other engine variants and are not interchangeable.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 4px;font-weight:700;\"\u003eDoes not fit:\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli\u003eMercedes W201: E 2.6, 2.6, D 2.5, Turbo D 2.5\u003c\/li\u003e\n\u003cli\u003e6-cylinder versions (there A 002 545 13 05)\u003c\/li\u003e\n\u003cli\u003eV8 versions (there A 002 545 18 05)\u003c\/li\u003e\n\u003cli\u003eLater M111 models such as the E 200 and E 220 (there 003 545 54 05, among others)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this part fit your car?\u003c\/strong\u003e Send us the VIN (chassis number) and model year – we'll check it for free: \u003ca href=\"tel:+491798991069\"\u003e0179 8991069\u003c\/a\u003e (Mon–Fri 8 am–6 pm) or via our \u003ca href=\"\/en\/pages\/contact?thema=Ersatzteil\"\u003econtact form\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eHow can I identify the correct version?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eBy the marking on the relay housing: this relay carries the designation \"4 Zyl. Kli\" for the 4-cylinder version. Other markings denote 6-cylinder or V8 engines and are not interchangeable.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eIs the relay tested?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eYes – this is a used genuine part that has been tested for function and works.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eWhat does it mean if the A\/C compressor no longer engages?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eAccording to the vehicle system, this is the typical failure pattern of a defective A\/C relay, when the refrigerant and electrics are otherwise fine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRelated categories:\u003c\/strong\u003e \u003ca href=\"\/en\/collections\/relais\"\u003eRelays\u003c\/a\u003e · \u003ca href=\"\/en\/collections\/w201\"\u003eW201\u003c\/a\u003e · \u003ca href=\"\/en\/collections\/w124\"\u003eW124\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKFZTeile-Thot\u003c\/strong\u003e specialises in spare parts for Mercedes classic cars. Free shipping within Germany, 60-day return policy.\u003c\/p\u003e","brand":"Mercedes-Benz","offers":[{"title":"Default Title","offer_id":54984556806473,"sku":"60773","price":49.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/5344\/8777\/files\/57_fa06f15d-6eeb-4401-b452-1ba8cd418f65.jpg?v=1787304492","url":"https:\/\/kfzteile-thot.de\/en\/products\/mercedes-klima-relais-a0025451205-4-zylinder-w124-w201-190e-g-klasse-12v-gepruft","provider":"KFZTeile-Thot","version":"1.0","type":"link"}