ABS relay clicking and dead battery
 

I have a 1992 300e and for the past couple of months I've noticed an intermittent clicking noise coming from the ABS unit. I hear this after the car has been run and I open the hood after shutdown. It will click several times, then cease, then repeat it. In the morning, the battery is dead.

Could this be caused by a faulty OVP relay?

Thanks!

Dave

OVP relay. Likely full of water and/or corrosion, seen it before with the same symptoms.