{"product_id":"mercedes-uberspannungsschutzrelais-usr-2015403745-9-polig-w124-w201-w126-r129-sl","title":"Mercedes overvoltage protection relay (OVP relay) 2015403745 9-pin W124 W201 W126 R129 SL","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;\"\u003eMercedes overvoltage protection relay (OVP relay) A 201 540 37 45 in the 9-pin version, fits, among others, W124, W201, W126 and R129\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#cfd3dc;\"\u003eUsed genuine part  ·  Function tested  ·  \u003cstrong style=\"color:#c69a3a;\"\u003eDirectly interchangeable plug-in relay\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\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✓ Fuses intact\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, function tested, the fuses are intact. Please refer to the product photos for the exact cosmetic condition.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eFunction and location\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eThe overvoltage protection relay (OVP relay) protects the control units from voltage spikes in the electrical system and also switches their power supply. Terminal 87E supplies the KE-Jetronic\/lambda control and ABS, terminal 87L the idle control unit, terminal 30a provides filtered permanent positive so the control units retain the fault memory. This 9-pin version has two separately switched relay stages and therefore two dedicated 10 A fuses.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eThe relay is installed in the engine bay on the right behind the battery, under the black plastic cover, directly next to the ABS and KE control units. It is a plug-in relay that can be directly swapped.\u003c\/p\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eHow can you tell if the overvoltage protection relay (OVP relay) is faulty?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eThe cause is usually a cracked solder joint from condensation or a blown fuse; the faults often occur only when warm. Typical symptoms:\u003c\/p\u003e\n\u003cul style=\"margin:0 0 16px;padding-left:20px;\"\u003e\n\u003cli\u003eRough or elevated idle, engine stalls when stopping\u003c\/li\u003e\n\u003cli\u003ePoor starting behavior, up to a no-start condition\u003c\/li\u003e\n\u003cli\u003eJerking and misfires, increased fuel consumption\u003c\/li\u003e\n\u003cli\u003eABS and ASD\/ASR warning light permanently on\u003c\/li\u003e\n\u003cli\u003eFuel pump not working or control unit no longer readable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eCompatible vehicles\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003eW201 190 series\u003c\/p\u003e\n\u003cul style=\"margin:0 0 12px;padding-left:20px;\"\u003e\n\u003cli\u003e190 (201.022, 201.023)\u003c\/li\u003e\n\u003cli\u003e190 E (201.024)\u003c\/li\u003e\n\u003cli\u003e190 E 2.3 (201.028)\u003c\/li\u003e\n\u003cli\u003e190 E 2.6 (201.029)\u003c\/li\u003e\n\u003cli\u003e190 E 2.3-16 (201.034)\u003c\/li\u003e\n\u003cli\u003e190 E 2.5-16 (201.035)\u003c\/li\u003e\n\u003cli\u003e190 E 2.5-16 Evolution (201.036)\u003c\/li\u003e\n\u003cli\u003e190 D (201.122)\u003c\/li\u003e\n\u003cli\u003e190 D 2.5 (201.126)\u003c\/li\u003e\n\u003cli\u003e190 D 2.5 Turbodiesel (201.128)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003eW124 sedan\u003c\/p\u003e\n\u003cul style=\"margin:0 0 12px;padding-left:20px;\"\u003e\n\u003cli\u003e200 E (124.021), 230 E (124.023), 260 E (124.026), 260 E long (124.027)\u003c\/li\u003e\n\u003cli\u003e300 E (124.030), 300 E-24 (124.031)\u003c\/li\u003e\n\u003cli\u003e200 D (124.120), 250 D Turbodiesel (124.128), 300 D (124.130), 300 D Turbodiesel (124.133)\u003c\/li\u003e\n\u003cli\u003e260 E 4MATIC (124.226), 300 E 4MATIC (124.230), 300 D Turbodiesel 4MATIC (124.333)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003eW124 coupe, convertible and wagon\u003c\/p\u003e\n\u003cul style=\"margin:0 0 12px;padding-left:20px;\"\u003e\n\u003cli\u003e230 CE (124.043), 300 CE (124.050), 300 CE-24 (124.051)\u003c\/li\u003e\n\u003cli\u003e200 CE \/ E 200 (124.060)\u003c\/li\u003e\n\u003cli\u003e200 T (124.080), 230 TE (124.083), 300 TE (124.090)\u003c\/li\u003e\n\u003cli\u003e200 TD (124.180), 250 TD (124.185), 250 TD Turbodiesel (124.188), 300 TD (124.190), 300 TD Turbodiesel (124.193)\u003c\/li\u003e\n\u003cli\u003e300 TE 4MATIC (124.290), 300 TD Turbodiesel 4MATIC (124.393)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003eW124 chassis\u003c\/p\u003e\n\u003cul style=\"margin:0 0 12px;padding-left:20px;\"\u003e\n\u003cli\u003e230 E (124.003, 124.004)\u003c\/li\u003e\n\u003cli\u003e250 D (124.105, 124.106)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003eW126 S-Class and coupe\u003c\/p\u003e\n\u003cul style=\"margin:0 0 12px;padding-left:20px;\"\u003e\n\u003cli\u003e260 SE (126.020), 300 SE (126.024), 300 SEL (126.025)\u003c\/li\u003e\n\u003cli\u003e420 SE (126.034), 420 SEL (126.035), 500 SE (126.036), 500 SEL (126.037), 560 SE (126.038), 560 SEL (126.039)\u003c\/li\u003e\n\u003cli\u003e350 SD (126.134), 350 SDL (126.135)\u003c\/li\u003e\n\u003cli\u003e420 SEC (126.046), 500 SEC (126.044), 560 SEC (126.045)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003eR107 and R129 SL\u003c\/p\u003e\n\u003cul style=\"margin:0 0 12px;padding-left:20px;\"\u003e\n\u003cli\u003e560 SL (107.048)\u003c\/li\u003e\n\u003cli\u003e300 SL (129.060), 300 SL-24 (129.061), 500 SL \/ SL 500 (129.066, 129.067)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003eW202 C-Class\u003c\/p\u003e\n\u003cul style=\"margin:0 0 12px;padding-left:20px;\"\u003e\n\u003cli\u003eC 180 (202.018), C 200 (202.020)\u003c\/li\u003e\n\u003cli\u003eC 180 T (202.078), C 200 T (202.080), C 200 Kompressor T (202.082)\u003c\/li\u003e\n\u003cli\u003eC 200 Diesel (202.120)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003eW461 and W463 G-Class\u003c\/p\u003e\n\u003cul style=\"margin:0 0 12px;padding-left:20px;\"\u003e\n\u003cli\u003e230 GE (461.223, 461.227, 461.229, 461.238, 461.239, 461.249, 461.266, 461.267)\u003c\/li\u003e\n\u003cli\u003e290 GD (461.323, 461.328, 461.329, 461.337, 461.338, 461.341)\u003c\/li\u003e\n\u003cli\u003e200 GE (463.200, 463.220, 463.221)\u003c\/li\u003e\n\u003cli\u003e230 GE \/ G 230 (463.204, 463.224, 463.225)\u003c\/li\u003e\n\u003cli\u003e300 GE \/ G 300 (463.207, 463.227, 463.228)\u003c\/li\u003e\n\u003cli\u003eG 320 \/ G 36 AMG (463.208, 463.230, 463.231)\u003c\/li\u003e\n\u003cli\u003e250 GD (463.304, 463.324, 463.325)\u003c\/li\u003e\n\u003cli\u003e300 GD \/ G 300 Diesel (463.307, 463.327, 463.328)\u003c\/li\u003e\n\u003cli\u003e350 GD Turbo \/ G 350 Turbodiesel (463.300, 463.320, 463.321)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eCommercial vehicles: Mercedes T1 Bremer Transporter 207 D to 410 D, Vario 512 D, T2\/LN2 709 D and 711 D.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eThe part number is A 201 540 37 45 (2015403745). This 9-pin version with two 10 A fuses is the forward-compatible replacement for the older 5-pin and 7-pin predecessor numbers A 201 540 08 45, A 201 540 30 45, A 201 540 32 45 and A 201 540 38 45. Not to be confused with the second-generation OVP relay for the HFM engines M104\/M111 from approx. 1993, part numbers A 000 540 52 45 and A 000 540 67 45, identifiable by a single blue 15 A fuse.\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;\"\u003eThis 9-pin version has two 10 A fuses and is not identical to the 7-pin part numbers A 201 540 38 45 and A 201 540 32 45 (one fuse each). Please count the pins on your removed relay before buying – the housing shape alone does not tell them apart.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 6px;\"\u003eThe 9-pin version is a forward-compatible replacement for the 5-pin and 7-pin predecessors, since surplus pins find no mating contact in the old socket; the reverse does not work. Not to be confused with A 000 540 52 45 and A 000 540 67 45 – that is the second-generation OVP relay for the HFM engines M104\/M111 from approx. 1993, identifiable by a blue 15 A fuse. Incorrect installation results in the engine no longer being able to be switched off and the transmission no longer shifting.\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\u003cli\u003eW124 400 E and 500 E – these models have no separate overvoltage protection relay (OVP relay), the function is integrated in the base module\u003c\/li\u003e\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 do I tell the 9-pin version apart from the 7-pin version?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eCount the pins on your removed relay: the 9-pin version has two dedicated 10 A fuses, the 7-pin predecessors A 201 540 38 45 and A 201 540 32 45 only one.\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 function tested; the fuses are intact.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eWhat if the part does not fit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eIn that case, our 60-day return policy applies, and shipping within Germany is free.\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, \u003ca href=\"\/en\/collections\/w126\"\u003eW126\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":55054788591945,"sku":"60805","price":59.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/5344\/8777\/files\/57_8369a54e-2c28-489e-8801-b85acd4b4c39.jpg?v=1787304621","url":"https:\/\/kfzteile-thot.de\/en\/products\/mercedes-uberspannungsschutzrelais-usr-2015403745-9-polig-w124-w201-w126-r129-sl","provider":"KFZTeile-Thot","version":"1.0","type":"link"}