The K40 relay in the Mercedes SLK 230 is a critical component in the vehicle's electrical system, primarily responsible for controlling the power supply to various engine management and fuel system components. It serves as a relay for the fuel pump and other engine-related functions, ensuring proper operation and efficiency. If the K40 relay fails, it can lead to starting issues, engine performance problems, or even complete engine shutdown. Regular checks of this relay are advisable to maintain the vehicle's reliability.
In a 1997 Mercedes E300D, the K40 relay is located in the engine compartment, specifically in the relay and fuse box on the passenger side. It is typically found near the battery, and you may need to remove the cover to access it. The K40 relay is crucial for various electrical functions, including the fuel pump and engine management system.
me = engine module the esp = traction module and the k40 relay fuse box is in there
Inspect k40 relay board and replace it if the soldered joints at top right of board are defective or resolder them. Please see: Link
In the engine compartment in the control module box. This is the little area by the right hood hinge that contains the control module. It is the K40/4 relay. Hope this helps.
under the hood on drivers side. take off cover to fuse box and the area closest to the passenger side has a cover with I believe four screws. the K40 relay is in there.
The relay is located in the right front of the engine compartment passengers side. There will be a black cover, release the 2 slide clips and remove the cover for access.The designation for the relay is K40/7ko.If your looking in at the relays from the passengers side of the engine compartment it should be the 4th relay from the left, once you pull the relay off it will have a designation under it. It should read O.The fuse is in the same compartment. It's the first 40amp large orange fuse next to the 60amp large fuse. Check with ohm meter because the fuse is hard to determine if blown by the eye.
Actually not all E class 9r especially E320 like mine has a fuel pump relay in the fuse box under rear passenger side seat. Mine actually is part of the K40 fuse/relay box under passenger side of hood near the firewall
Often the MAF sensor needs replacing, or possibly the coil packs, leads, spark plugs, K40 relay board (re-solder or replace), oil contaminated wiring, O2 sensor or crank angle sensor, disintegrated vacuum hoses, loose hoses, other.
The K40 will not work as a marine band antenna, as it is "cut" (optimised) for 26-30Mhz. The Marine Band of frequencies is usually found 156-174Mhz.
Polypropylene K40 is a type of polypropylene resin that is commonly used in manufacturing processes. It has a melt flow rate (MFR) of around 40 g/10 min, indicating its flow properties during processing. Polypropylene K40 is often chosen for applications where a balance of stiffness, impact resistance, and processability is required.
K-39 is the most abundant, constituting about 93 % of the atoms in naturally occurring potassium.
After the first half-life, you will have one half of the starting amount. After a second half-life period, you'll be down to one quarter. Of the part that radioactively decays, about 11% of it will decay to 40Ar, and the remainder to 40Ca. Of your total sample of ordinary potassium, only 0.012% will be 40K. The half-life of 40K is about 1.3x109 years.