ASR Light On, Throttle Dies

[DCJimmy12]

Hi, everyone--

I was wondering if I could get solicit some opinions/suggestions about a car problem I'm having.

I've got a '95 E320 wagon. It's in excellent shape and has been regularly serviced. I've had no problems with it until today.

This morning it was freezing out (~15deg F), and I was driving to work. I was on the highway and had been driving for about 10 minutes. It was stop and go traffic. Suddenly, the ASR light came on and the accelerator failed to respond. The engine was still running, but when I pushed down on the accelerator nothing happened--the engine didn't rev. Otherwise the car seem unaffected. I stopped the car, put it in park, and restarted it. The light went off and the car ran fine. No problems on the way back from work today.

Any thoughts on what the problem is? Is it something I should be concerned about or a freak event? Any possible fixes?

Many thanks!