{"product_id":"mercedes-mas-steuergerat-a0115457932-m103-usa-w124-300e-300te-w126-w201-190e-2-6","title":"Mercedes MAS control unit A0115457932 M103 USA W124 300E 300TE W126 W201 190E 2.6","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;\"\u003eUsed genuine Mercedes-Benz MAS control unit A 011 545 79 32 in US specification for the six-cylinder M103 in W124, W126 and W201.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#cfd3dc;\"\u003eGenuine part – not aftermarket  ·  US specification for six-cylinder M103  ·  \u003cstrong style=\"color:#c69a3a;\"\u003eConnector header undamaged\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\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. Print on housing: 011 545 79 32 MAS [07], M103 USA, (K) 05 3700 45, additional MAS sticker. Stainless steel retaining bracket with slight signs of use, rotary lock on top (0 \/ I) present, connector header undamaged.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eFunction and location\u003c\/h3\u003e\n\u003cp\u003eThe MAS combines several individual relays in one unit: fuel pump relay, A\/C relay with compressor cut-off and overvoltage protection, and on the US specification additionally the magnetic clutch of the secondary air pump. The engine speed signal to the tachometer also runs through the MAS. The rotary knob on top is the lock in the connector (I = locked, 0 = release). Without the MAS the engine will not start.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation location:\u003c\/strong\u003e In the engine bay behind the battery on the firewall, in the control unit box under the plastic cover next to the KE control unit.\u003c\/p\u003e\n\n\u003ch3\u003eHow can you tell that the MAS control unit is faulty?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEngine cuts out after approx. 15 minutes when warm and only restarts after cooling down\u003c\/li\u003e\n\u003cli\u003eNo start, the fuel pumps do not run\u003c\/li\u003e\n\u003cli\u003eTachometer drops to 0, the other gauges keep working\u003c\/li\u003e\n\u003cli\u003eA\/C compressor does not engage or switches off after a few minutes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible vehicles\u003c\/h3\u003e\n\u003cp\u003eUS specification, six-cylinder M103 with MAS only. Please compare the number on your own MAS.\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 16px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 10px 8px 0;border-bottom:2px solid #c69a3a;\"\u003eModel series\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 0;border-bottom:2px solid #c69a3a;\"\u003eModels\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px 8px 0;border-bottom:1px solid #e3e5e9;vertical-align:top;\"\u003eE-Class W124 sedan (six-cylinder M103, approx. 1990–1993)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 0;border-bottom:1px solid #e3e5e9;vertical-align:top;\"\u003e260 E (124.026, sold in the US as 300 E 2.6), 300 E (124.030), 300 E 4MATIC (124.230)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px 8px 0;border-bottom:1px solid #e3e5e9;vertical-align:top;\"\u003eE-Class S124 wagon (six-cylinder M103, approx. 1990–1993)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 0;border-bottom:1px solid #e3e5e9;vertical-align:top;\"\u003e300 TE (124.090), 300 TE 4MATIC (124.290)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px 8px 0;border-bottom:1px solid #e3e5e9;vertical-align:top;\"\u003eS-Class W126 (six-cylinder M103, 1990–1991)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 0;border-bottom:1px solid #e3e5e9;vertical-align:top;\"\u003e300 SE (126.024), 300 SEL (126.025)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px 8px 0;border-bottom:1px solid #e3e5e9;vertical-align:top;\"\u003e190 W201 (six-cylinder M103, 1990–1993)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 0;border-bottom:1px solid #e3e5e9;vertical-align:top;\"\u003e190 E 2.6 (201.029)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart numbers:\u003c\/strong\u003e Mercedes-Benz: A 011 545 79 32 \/ A0115457932  ·  Kostal: 05 3700 45 \/ 05370045  ·  Interchangeable per aftermarket catalog: A 007 545 65 32 \/ A0075456532, A 012 545 46 32 \/ A0125454632\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eScope of delivery:\u003c\/strong\u003e see product photos. Control unit with stainless steel retaining plate.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#fbf6ea;border:1px solid #c69a3a;border-radius:8px;padding:14px 18px;margin:0 0 16px;\"\u003e\n\u003cp style=\"margin:0 0 8px;font-weight:700;\"\u003e⚠ Important: compare the part number before buying\u003c\/p\u003e\n\u003cp style=\"margin:0 0 6px;\"\u003e\u003cstrong\u003eUS-spec\u003c\/strong\u003e – Print M103 USA. Interchangeable with A 007 545 65 32 (Kostal 05 3700 15) and A 012 545 46 32 per aftermarket catalog.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 6px;\"\u003e\u003cstrong\u003eNot four-valve M104\u003c\/strong\u003e – 300 E-24, 300 CE-24, 300 TE-24 and 300 SL-24 have different MAS units (A 011 545 83 32, A 008 545 85 32, A 011 545 82 32).\u003c\/p\u003e\n\u003cp style=\"margin:0 0 6px;\"\u003e\u003cstrong\u003eNot V8 and not E 320\u003c\/strong\u003e – 500 SL M119 has A 011 545 85 32, the E 320 has its own control unit A 015 545 43 32.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 6px;\"\u003e\u003cstrong\u003eOlder vehicles\u003c\/strong\u003e – Six-cylinder cars before approx. 1990 still have individual relays for fuel pump, overvoltage protection and A\/C instead of a MAS.\u003c\/p\u003e\n\u003cp style=\"margin:8px 0 4px;font-weight:700;\"\u003eDoes not fit:\u003c\/p\u003e\n\u003cul style=\"margin:0;\"\u003e\n\u003cli\u003eFour-valve M104 (24V)\u003c\/li\u003e\n\u003cli\u003e500 SL M119 and V8\u003c\/li\u003e\n\u003cli\u003eE 320\u003c\/li\u003e\n\u003cli\u003efour-cylinder\u003c\/li\u003e\n\u003cli\u003eDiesel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\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\"\u003e+49 179 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\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the MAS control unit definitely fit my car?\u003c\/strong\u003e\u003cbr\u003ePlease compare the number on your own MAS with the part numbers on this page. If you are unsure, send us your VIN by phone or via the contact form before buying. We will check it against the parts catalog free of charge and tell you definitively whether this part fits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I get exactly the part shown in the photos?\u003c\/strong\u003e\u003cbr\u003eYes. The photos show the actual part you will receive.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRelated categories:\u003c\/strong\u003e \u003ca href=\"\/en\/collections\/w201\"\u003eW201\u003c\/a\u003e · \u003ca href=\"\/en\/collections\/w124\"\u003eW124\u003c\/a\u003e · \u003ca href=\"\/en\/collections\/w126\"\u003eW126\u003c\/a\u003e\u003c\/p\u003e\n\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":"KFZTeile-Thot","offers":[{"title":"Default Title","offer_id":55669881667913,"sku":"60922","price":169.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/5344\/8777\/files\/57_fb2bdad3-ca52-426d-953a-4fccf9ce2a7c.jpg?v=1792405097","url":"https:\/\/kfzteile-thot.de\/en\/products\/mercedes-mas-steuergerat-a0115457932-m103-usa-w124-300e-300te-w126-w201-190e-2-6","provider":"KFZTeile-Thot","version":"1.0","type":"link"}