[siguenm]

I'd like an update as well.

I'm having a similar issue with my 2012 135i. She's at 77k miles. She had a coolant light come on and went into limp mode; I took her into the shop the next day. They replaced the water pump and the thermostat. Two days later, the coolant light came on again; the tank coolant reservoir was nearly empty. I took her to the shop again a couple days later and they replaced the water pump and the thermostat....and checked to BDS line and the power box. Turned out the power box had a faulty weld during manufacturing. Mechanic replaced the power box.

Well, two days later same thing again: coolant light turned on, coolant reservoir nearly empty.

The mechanic (who has been taking care of my car since I got it at 15K miles) suggests to change the alternator. She's scheduled to go in this week.

Has anyone experienced something like this?