Where is the K40 relay on a SLK 230?
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. A heat shield and a blower motor keep the electronics in the box cool.
How can I repair my Mercedes SLK 230 overload protection relay?
A brass clip (green arrow) keeps the K40 in place. Pressing it outward sets the K40 free. Pull the plugs off the K40 and remove it from the car. A skinny flathead screwdriver can be used to pry the relay board out of the case. Check the relay side of the board for obvious problems: charred or loose connections, etc.
Why is my Mercedes SLK 230 not working?
A non-functioning blower can be a root cause. With the ignition switched on, this fan is audible, and airflow should be felt with the control module’s cover removed. Visual inspection of the K40 might reveal a correctable flaw.
What does the PSE do on a Mercedes Benz?
The PSE (A-37) has a vacumn pump to operate the door, boot and petrol filler locks. Plus rear demister relay and ARA control model if fitted. It comunicates with the DAS thru the CAN from the MFC unit.
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. A heat shield and a blower motor keep the electronics in the box cool.
A non-functioning blower can be a root cause. With the ignition switched on, this fan is audible, and airflow should be felt with the control module’s cover removed. Visual inspection of the K40 might reveal a correctable flaw.
A brass clip (green arrow) keeps the K40 in place. Pressing it outward sets the K40 free. Pull the plugs off the K40 and remove it from the car. A skinny flathead screwdriver can be used to pry the relay board out of the case. Check the relay side of the board for obvious problems: charred or loose connections, etc.
What to do if your SLK Class R170 has a leak?
Changing the SLK230 MAF sensor is easy with our handy replacement guide. Got a leak in your exhaust manifold? Fix it with this tech article. ABS warning light blinking?
What causes the K40 overload protection unit to fail?
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.
What should I do if my K40 malfunctions?
When the K40 malfunctions, these components don’t get their required voltage. Troubleshooting should obviously begin with any diagnostic trouble codes (DTCs), followed by checking for blown 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.
Is it possible to buy a 2002 SLK320?
And failing that, does anybody want to buy a 2002 SLK320 with a genuine 20,000 miles from new, but currently DEAD? Nobody close-by from who you can borrow a K40? It may help if you update your profile with your location. But it does sound like the K40 – although failures were rare on the facelift models.
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).
When was the Mercedes SLK 320 last serviced?
No accident or damage reported to CARFAX… 1st owner purchased on 08/30/01 and owne… Last serviced at 90,015 miles in Gilbert… 1st owner drove an estimated 5,282 miles… No accident or damage reported to CARFAX…
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.
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 do you remove a positive terminal cable from a computer?
Remove the positive terminal cable from the battery using your pliers or wrench. Go to your fuse box in your car, and look at the diagram. Select the fuse that is labeled “ECM” and remove this fuse. Keep the car disconnected like this for two to three minutes to clear the computer’s memory.
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…
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).
Is the Mercedes SLK 230 still in production?
See reviews below to learn more or submit your own review. The SLK 230 is a luxury coupe that is currently discontinued. Read more Mercedes-Benz reviews to learn about other models. I paid 70,000 for a beautiful design copper color Mercedes SLK 230 in the year 2000. After 2-3 years the dashboard started cracking and falling apart.
Why is my heat shield not working on my SLK 230?
A heat shield and a blower motor keep the electronics in the box cool. A non-functioning blower can be a root cause. With the ignition switched on, this fan is audible, and airflow should be felt with the control module’s cover removed.