K40 relay slk 230. Just had the Benz dealer diagnose and they said it is a bad k40 relay. Whether you’re a beginner or a seasoned pro, it’s essential to have a thorough understanding of the electrical system in your vehicle. Once both of these parts were replaced, the car began running like new. I bench tested the ECT(engine coolant Find many great new & used options and get the best deals for For Mercedes R170 W210 SLK230 E320 E420 K40 Computer Control Relay 2105400072 at the best online prices at eBay! Free shipping for many products! May 31, 2014 · This week’s tech post will cover diagnosing, removing, and installing a multi-function relay module in a 2000 Mercedes SLK230 roadster. If my interpretation is correct, the no cranking symptom is a consequence of the failure of the K40 module to supply power to the fuel pump. What I have done so far. The K40 relay in the SLK 230 performs several important functions. The dash lights come on and when I press the throttle, the engine does not respond although it is still running. Nov 4, 2006 · My 1998 slk230 just started symptoms of k40 relay issues. First, the customer complaint: car runs great, no probl… Apr 26, 2024 · Update: I wonder if it coincidental that the Mass Air Flow Sensor went bad at the same time as the K40 Relay on my 99 SLK230. This unit provides voltage to the control modules and electrical components, including the fuel pump, electric air pump, and horn. com On the K40 relay SLK 230 connector e-pen 3 is supposed to receive a it is not getting that signal I can jump over a Dec 6, 2022 · The Slk 230 K40 Relay Wiring Diagram is an essential tool for any automotive enthusiast. Oct 10, 2012 · The fault was the K40 relay module, as suspected. When the K40 malfunctions, these components don't get their required voltage. . The notorious K40 overload protection unit is a well-known cause of starting, idling, and engine stumbling problems. It also helps in managing the electrical flow to the vehicle’s ignition system. I replaced the whole module, but it was probably a failure of the relay controlling the fuel pump (2nd from left when viewed from the side with the fuses). It controls the fuel pump, the air pump, the air injection system, and the engine control module. I have tried a different fan module nothing. May 17, 2006 · Does anyone know anything about the k40 relay itself and where it is located? Or do I need to just be concerned about replacing the k40 relay module described in the previous posts? SLK230 Mercedes Benz 1998 Relay - AutoPartsWarehouse. Where can I find a wiring diagram for the SLK 230 K40 relay? 1-16 of 31 results for "mercedes slk230 relay k40" Results Check each product page for other buying options. Step by step guide on how to fix a common problem with the K40 Relay unit in a R170 series Mercedes Benz SLK 230. I have a situation with my 1999 SLK 230 with the fan, the moment you turn the ignition key to position 2 the fan kicks in at full speed. In this episode of Old Skull Garage, I’m tackling a well-known Mercedes SLK 230 Kompressor (R170) problem—the notorious K40 relay unit failure! Instead of spending a fortune, I found the 4 days ago · Hello everyone, hope we are all in good health. Then, the dash lights go out and everything is back to normal. jcx blw dbu hxk sbw wph jtl ufj xma ect uvp qpj bhe nkq oxz