All of those items are computer controlled..you need to have the can scanned for problems.

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It sounds like the engine CAN network is down. Like 'Doc says, have the car scanned for codes. I'll bet that one of the control modules on the network has failed, and took down the rest of them.

Thanks Guys! I have a scanner and I’ll pull the codes later on. I’ll post them when I get them.

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98 E320 175,600m
99 ML320 175,500m
as of 12/2012

Here is what I got.

0500 Vehicle speed signal
0600 CAN of ESP
0720 Read ETC fault memory
1605 CAN acceleration info for poor road recognition from ABS speed sensor

I hope it’s an easy fix that’s not too hard on the pocket book!

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98 E320 175,600m
99 ML320 175,500m
as of 12/2012

HELLO. I HAVE THE SAME CODES AS YOURS
P0500
P0600
P0720
P1605
AND HAVE NO IDEA HOW TO FIX IT.
I REPLASED BRAKE SWITH,BRAKE PADS,CHEKED ATF,NO HELPS.. STILL STAYING IN THE LIMP MODE..
HOW YOU HAD FIXED ?? THANKS.