Hi Everyone
Just wanted to share that the wonderful group at Hoehn Mercedes was able to save me heartache by replacing the relay PN#002-542-26-19, the relay contacts were worn out. They performed DTC's and found fault code C1401 for high pressure and return pump, the relay was inspected and the relay contacts were indeed worn out. Hydraulic unit relay replaced and codes were cleared. NOW if the problem comes back I ill need the BAS hydraulic unit parts retail $1,736.00 - relay $23.50 - I'm good. This forum really help me put my thinking cap on - It also doesn't hurt to have a dad and an uncle as East Coast consultants everytime I have an issue - Good Luck to all

Henriette
2001 ML320
98 C230
98 300E