Why did my Mercedes-Benz K40 relay module fail?
But it does sound like the K40 – although failures were rare on the facelift models. The fault was the K40 relay module, as suspected. 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).
What was the fault of the K40 fuel pump?
Most people believe that there must be some out there somewhere, but nobody has yet been able to prove their existence. The fault was the K40 relay module, as suspected. 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).
What does the K40 relay module do on a SLK320?
K40 relay module. What exactly does it do? My SLK320 does not crank when I turn the key, and there is also no power reaching the fuel pump. The battery is absolutely fine.
When does the K40 send power to the starter?
I think that the K40 should send power to the fuel pump for a few seconds when the ignition is turned on. Then, and only then, the K40 should send power to the starter when the key is turned. Is this correct? If it is correct then the no cranking symptom is a result of the k40 not supplying power to the fuel pump?
But it does sound like the K40 – although failures were rare on the facelift models. The fault was the K40 relay module, as suspected. 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).
What causes the K40 overload protection relay to malfunction?
The notorious K40 overload protection unit is a well-known cause of starting, idling, and engine stumbling problems. This unit provides voltage to the control modules and electrical components, including the fuel pump, electric air pump, and horn. When the K40 malfunctions, these components don’t get their required…
Most people believe that there must be some out there somewhere, but nobody has yet been able to prove their existence. The fault was the K40 relay module, as suspected. 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).
K40 relay module. What exactly does it do? My SLK320 does not crank when I turn the key, and there is also no power reaching the fuel pump. The battery is absolutely fine.
Is the K40 relay circuit and associated?
After some machination and screwdriver technology, I learn the K40 is perfect. The air intake for the Kompressor diverter valve is all clean as the kitchen floor, but the diverter wont close @ rpm Once again it is audibly and physically energized. Is it hammer time ??
Where is the K40 relay located on a Mercedes Benz?
I found what appears to be a k40 relay, but not the k40 relay module described in previous posts. Both part suppliers said it is located “right front under hood”, but I don’t see anything that looks like the picture on their site. Does anyone know anything about the k40 relay itself and where it is located?
Where is the K40 relay on my 98 slk230?
Just searched the net for a k40 relay for my 98 slk230. I found what appears to be a k40 relay, but not the k40 relay module described in previous posts. Both part suppliers said it is located “right front under hood”, but I don’t see anything that looks like the picture on their site.
After some machination and screwdriver technology, I learn the K40 is perfect. The air intake for the Kompressor diverter valve is all clean as the kitchen floor, but the diverter wont close @ rpm Once again it is audibly and physically energized. Is it hammer time ??
Where is the K40 overload protection relay located?
Troubleshooting should obviously begin with any diagnostic trouble codes (DTCs), followed by checking for blown fuses. If those lead to dead-ends, the K40 is worth scrutinizing. The K40 relay is located in the control module box, under the hood. In left-hand-drive R170 SLKs, this box is near the exhaust manifold.
How does the K 40 key relay look like?
DO YOU KNOW HOW DOES THE K 40 KEY RELAY LOOK LIKE IVE BEEN LOOKING FOR IT BUT DONT KNOW HOW IT LOOKS BUT IM GOING TOP CHECK THAT K 38 ALSO 3 people found this helpful. This is a diagram of where it should be
Where is the K40 relay on a Mercedes SLK?
The K40 relay is located in the control module box, under the hood. In left-hand-drive R170 SLKs, this box is near the exhaust manifold. A heat shield and a blower motor keep the electronics in the box cool.