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[laird]

I have a 99 NA S70 that has for over a year now thrown an ETS light pretty regularly and had intermittent cruise control. I believe the code is P1047. When getting a new key cut/programmed, I asked the Volvo Tech to read any stored codes. He told me it was a "Brake Voltage Too High" message. I replaced the brake light switch to no avail and then with input from "Ihatespeedbumps", I looked at the Brake Pedal Position Sensor.
I found a great link that detailed the common failure and repair for this and went to work. http://www.volvoforu...?t=97192&page=5
It has been three months now and the car is perfect. No ETS lights and solid cruise control all for about 30 minutes work.
I had been thinking that I was experiencing the typical dreaded ETM failure but it turned out to be something very simple. The dealer wants about $120 for a new sensor but you can fix it for nothing.

[ARD - Lucky]

Great info, thanks for sharing!