SL55/63/65/R230 AMG: Battery control module bad
#1
Battery control module bad
Hey guys my sl55 has battery drain and the red batt light came up. Front batt not charging well 12.85 when on and died last week, charged back with trickle charger.
I have new alt and regulator. So I removed bcm and inside it was damaged looks like a few burnt resistors. Does anyone know would this cause the front bat not to get full voltage from the alternator.
Also does anyone that can rebuild one of these ebay seems very steep on this.
One last think if there are any weekend warriors in NY that do DIY and want to take a look at the car see if they can help out PM me.
I have new alt and regulator. So I removed bcm and inside it was damaged looks like a few burnt resistors. Does anyone know would this cause the front bat not to get full voltage from the alternator.
Also does anyone that can rebuild one of these ebay seems very steep on this.
One last think if there are any weekend warriors in NY that do DIY and want to take a look at the car see if they can help out PM me.
#3
Super Member
Be tough to rebuild it, lots of resistors and capacitors, when mine burnt, i just swapped in a used unit, i think i paid $350 at the time, which isn't bad. What prices are you seeing?