Front to back.
Relay module K40 (power supply) is the front one with the fuses.
Next is the trans computer (EGS), then the engine control module (IFI), & last the traction system computer (ASR or ETS).

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator