BMW code 213A2D

[Marcozi]

2018 M240i with the 6 speed. Parked the car, put it in first, and shut the engine off. Heard a lot bang from the rear. Thought, "Crap, I lost a spring." Checked the car out, pushing down on each fender-no issues. With a flashlight I crawled under the car. All looked good, the springs and shocks looked fine. No leaks. Checked the serpentine belt; it was fine. Scanned the car with bimmerlink. Bunch of electrical codes, and found 2 codes: 213A2D ("dual mass flywheel, protection; harmful operating point detected") and CDA505 (ignore as the car doesn't have EGS). See the attached pic. I tried to clear all of the codes but these two codes would not clear! I took the car for a short spin. It shifted fine, no noise, no jerking, nada.

I contacted a friend of mine who is a BMW master mechanic. He's in NC and noted that the clutch may need to be replaced.

The car has ~36k miles on the odo. Tracked 3x. Original battery.

Did some research on the net, and some pointed to the battery. I don't think it's the battery.

Any ideas?

Thanks!

 

[JohnnyJohnson]

Hope its the battery its very likely your cheapest possible fix. Sounds like your battery could be 6 years old. But don't just pull they battery or your onboard computer will likely go dead!

 

[FowVay]

If it's possible I would get underneath the car and inspect the area around the transmission/engine mating surfaces. If there are any inspection openings then get your flashlight and poke around. I'd also limit my driving the vehicle until I found out what caused the banging sounds.

Batteries don't make banging sounds but failed/failing dual-mass flywheels certainly do.

 

[KrisZ]

I agree it could be the dual mass flywheel. The bang noise may have been transmitted by the driveshaft and it seemed that it came from the rear.

 

[wavinwayne]

I agree it could be the dual mass flywheel. The bang noise may have been transmitted by the driveshaft and it seemed that it came from the rear.

^This is my guess as well.^

 

[Marcozi]

I agree it could be the dual mass flywheel. The bang noise may have been transmitted by the driveshaft and it seemed that it came from the rear.

That's what I'm thinking, too. But, I drove the car later, not hard, just as I normally do. I think I'll see what happens when I have the cr in first, brakes applied and I let the clutch out slowly.

 

[meep]

Clutch is under pressure and bolted to the flywheel. I’m wondering if a bolt got stripped and popped out, or if a chunk of clutch apparatus under tension let go.

Any vibration when running?

 

[Marcozi]

Clutch is under pressure and bolted to the flywheel. I’m wondering if a bolt got stripped and popped out, or if a chunk of clutch apparatus under tension let go.

Any vibration when running?

None, zero, nada.

 

[Marcozi]

Update: the code is gone. No one I’ve talked with has an idea about the code. I’ve emailed the company that owns bimmerlink but no response.

The car continues to drive normally.