This morning my 04 E320 4matic ran just fine. This afternoon when I started the car, a red reduced brake warning and brake system malfunction warning illuminated the dash, coupled with an ESP warning. The lights then went away.
I let the car warm up (it was 30 degrees) a bit. I drove a hundred yards and braked to a complete stop twice with no problem. Pull on to the main road and all the warning lights came back. I glided into the adjoining parking lot with zero brakes.
Two months ago, I got a low brake fluid warning and filled up with the correct fluid. Today, after gliding to a stop, I noticed the brake fluid was below the min line. I filled it back up to just below the max line. I pumped the brakes a couple times to hopefully reintroduce fluid in the system. I then turned off the car for several minutes and restarted and let the car warm up some more. Warning lights reappeared.
I then notice the SBC pump would vibrate and make a groaning noise every five seconds (I timed it). It even would vibrate after the car was turned off. The auxiliary battery was replaced a year and a half ago, but I do get the "aux functions not available" for a minute or two now and then. I will be unable to get the codes, as I am not putting that thing on the road. What is my next step?
I let the car warm up (it was 30 degrees) a bit. I drove a hundred yards and braked to a complete stop twice with no problem. Pull on to the main road and all the warning lights came back. I glided into the adjoining parking lot with zero brakes.
Two months ago, I got a low brake fluid warning and filled up with the correct fluid. Today, after gliding to a stop, I noticed the brake fluid was below the min line. I filled it back up to just below the max line. I pumped the brakes a couple times to hopefully reintroduce fluid in the system. I then turned off the car for several minutes and restarted and let the car warm up some more. Warning lights reappeared.
I then notice the SBC pump would vibrate and make a groaning noise every five seconds (I timed it). It even would vibrate after the car was turned off. The auxiliary battery was replaced a year and a half ago, but I do get the "aux functions not available" for a minute or two now and then. I will be unable to get the codes, as I am not putting that thing on the road. What is my next step?