Veteran Techs

[nisan17]

Hi Group,
I have a 98 ML 320 with 173k. I've submitted past posts reagrding my ETS/ABS lights coming on intermittently then staying on continuously over this past year. I didn't want to spend the $100 to have the dealer just check it. At first I thought it had something to do with the outside temp as when the light would first go on it was pretty warm, as in the 80's and 90's outside.

Then the light just stayed on last summer. Going off once in a great while, only to come on and stay on again.

This past weekend we had an Arctic blast having temps 5 to 15 below zero. To my JOY the light never came on the first morning I started the ML. Now three days into the blast, they're still off. (it is nice to have abs and ets again!)

With the vast experience of the techs in this group, can the diagnoses be narrowed?
Give me a glimmer of hope!
Thanks in advance,