Oct 10, 2012 · 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 …

May 11, 2013 · I wonder about the fuse that sits in the F3 position in the K40 relay module. It all begin with starting problem and gearshift problem for this W210, E55-00. Change the battery, …

Aug 19, 2017 · Try disabling this cooling fan connector on the K40 unit ( very small connector) and check those fuses. Replace fuses if necessary while leaving computer fan unplugged.

Aug 7, 2017 · W210 AMG - how to check if the k40 is fine - hi everybody ! i still have a esp ecu problem and someone suggest me to checking if the k40 relay have no trouble and if he …

A45 A45x2 G1 H2 H2 K40 K40 K40 K40f1 K40f2 K40f3 K40f4 K40f5 K40f6 K40k1 K40k3 K40k4 K40k5 K40k6 K40k9 M3 M33

Jan 3, 2013 · Turning to fuses, the 4th fuse (7.5A) on the K40 p/n A0005400372 is blown. Annoyingly, this also powers the diagnostic socket on pin 2 so I cannot connect it to STAR. I …

Jan 15, 2009 · Think its indicating its the k9 relay which appears to give battery power to the ECU. Other searches found mentions of many configuration variations depending on models and …

Nov 5, 2023 · E420 just cut off in mid drive and refused to start. The symptoms pointed to a faulty K40 relay that is known to give up.

May 5, 2018 · Turning to fuses, the 4th fuse (7.5A) on the K40 p/n A0005400372 is blown. Annoyingly, this also powers the diagnostic socket on pin 2 so I cannot connect it to STAR. I …

The K40 relay looked perfect inside as did the ECU with no odor or visible signs of short circuits. The consensus of myself and our technicians who have W210 experience is a failure of the …