I just bought a 2000 ML430 ... BONUS, it came with all three lights already on. The purchase price was adjusted due to the lights.

I pulled the control module and soldered the joint for pin 15. All the lights are still on! The pump DOES NOT run with the the relay jumped!?!?!?

The pump on the 2000 model year is slightly different than the '98 & '99. The motor on the hydro unit DOES NOT have the external two wire power feed. The feed goes the THROUGH valve block.

I cleaned all the wheel speed sensors but have not done the steering lock-to-lock reset. I do not know if the brake light switch has been replaced.

Questions:

1) Should the pump run when jumpered at the relay regardless of other problems?
2) Can the pump electric motor be removed from the hydraulic valve block without compromising the integrity of the non-ABS/EPS/BAS functions?

Thanks

Eddie

Seattle, WA

2000 ML430
1999 ML430