Rear Axle Differential lock

[Brando.a]

Hey guys, so a couple days ago I went to pick up my gf from work (which is like ten minutes from my house) and on the way home I noticed a slight scraping noise as if something was dragging under the car. Obviously I got out and checked to see if any panels were dragging and everything was intact. After I got back in the car and drove for another two minutes it continued until a heard a loud clank noise as if something broke and the noised stop. Got home and checked it again but this time I checked all the wheels and everything still looked fine from what I could see. Drove the car after that day and everything was fine until last night, I drove to my friends house and everything was good. When I’m getting ready to leave now I get this error but the car is driving the same and 2 minutes before I reach my house, I hear the noise again. This time it’s as if something is grinding very aggressively against something else. So loud that I heard it over the music blasting. After I pull up in front my house, again I get out and check but things still look normal. Now I get back in the car to move the car in the driveway and the noise disappears again. Has anyone else had this problem?
Before anyone asks, no I wasn’t speeding. Car was in normal mode both times. I thought it could be because of the harsh roads in my area with pebble being stuck in between the caliper and Rotor but doesn’t explain it happening by gf’s job.

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[Supra Cat]

Hey guys, so a couple days ago I went to pick up my gf from work (which is like ten minutes from my house) and on the way home I noticed a slight scraping noise as if something was dragging under the car. Obviously I got out and checked to see if any panels were dragging and everything was intact. After I got back in the car and drove for another two minutes it continued until a heard a loud clank noise as if something broke and the noised stop. Got home and checked it again but this time I checked all the wheels and everything still looked fine from what I could see. Drove the car after that day and everything was fine until last night, I drove to my friends house and everything was good. When I’m getting ready to leave now I get this error but the car is driving the same and 2 minutes before I reach my house, I hear the noise again. This time it’s as if something is grinding very aggressively against something else. So loud that I heard it over the music blasting. After I pull up in front my house, again I get out and check but things still look normal. Now I get back in the car to move the car in the driveway and the noise disappears again. Has anyone else had this problem?
Before anyone asks, no I wasn’t speeding. Car was in normal mode both times. I thought it could be because of the harsh roads in my area with pebble being stuck in between the caliper and Rotor but doesn’t explain it happening by gf’s job.

See this from BimmerFest: Differential Lock Warning | BimmerFest BMW Forum

It may be a significant failure in your diff. Crossing my fingers for you that it's just a bad solenoid.

 

[biorobin1]

Hey guys, so a couple days ago I went to pick up my gf from work (which is like ten minutes from my house) and on the way home I noticed a slight scraping noise as if something was dragging under the car. Obviously I got out and checked to see if any panels were dragging and everything was intact. After I got back in the car and drove for another two minutes it continued until a heard a loud clank noise as if something broke and the noised stop. Got home and checked it again but this time I checked all the wheels and everything still looked fine from what I could see. Drove the car after that day and everything was fine until last night, I drove to my friends house and everything was good. When I’m getting ready to leave now I get this error but the car is driving the same and 2 minutes before I reach my house, I hear the noise again. This time it’s as if something is grinding very aggressively against something else. So loud that I heard it over the music blasting. After I pull up in front my house, again I get out and check but things still look normal. Now I get back in the car to move the car in the driveway and the noise disappears again. Has anyone else had this problem?
Before anyone asks, no I wasn’t speeding. Car was in normal mode both times. I thought it could be because of the harsh roads in my area with pebble being stuck in between the caliper and Rotor but doesn’t explain it happening by gf’s job.

Did you ever find out what it was or has it came back? Mine did it twice after some hard accelerations but i didn’t notice a scraping noise like you had. I’m just wondering what this could be ?

 

[Guff]

Sounds like OPs Diff failed in some way. Probably should get it towed to the dealer to get checked out.

 

[biorobin1]

Sounds like OPs Diff failed in some way. Probably should get it towed to the dealer to get checked out.

Okay, ill post back to the forum whenever I find anything out form the dealer. Hopefully something else is causing the issue.