Ouch, that is rough with only 13k miles. Most folks are fine after a CCU swap but some have other issues pop up. Definitely track everything with CA Lemon Law. Hope the new steering wheel sorts the assisted driving.

 

So, two days after I thought my 2024 i4 M50 was the best and most reliable car I had ever owned, I walked out to go to work to find an entirely bricked car. The car has just over 13,000 miles on it. After the usual struggle getting a vehicle that won't go into neutral out of my garage, it spent 33 days in the shop. Repair required CCU replacement. They also discovered that the assisted driving wasn't working due to an apparent steering wheel defect, and a new steering wheel is on order to address that.

What is the collective experience here on reliability after a CCU replacement. I live in CA, where we have a very strong Lemon Law, which I am debating making use of. I still love the car, but reliability is now of concern to me. What have your experiences been? Does the CCU issue seem to be an ongoing concern with our vehicles?

On my side:

• CCU replacement (permanent connectivity issues with Idrive 8.5)
• Auxiliary heating system replacement (no heating during winter time)
• Steering wheel replacement (noise, creaking)
• Charging trap replacement (trap blocked a couple of time)
• Part of rear seats replacement (noise, creaking)
• Trunk locking system replacement (issue during locking)

About more than 10 visits to the dealer in one year and a half. The car has now about 30.000 kms.
Tyres dead after 15.000 kms.
Not yet fixed:

• Creaking in the driver door
• USB A connector for Music bugging (having to plug and unplug the USB key to start the music or when crashed while using a top quality Samsung Fit USB key)
• Wireless charging only working with 1 out of 4 phones (Iphone and Samsung S24 S25)…blue light switching orange after a couple of minutes
• Creaking in the trunk (coming from the right rear pillar…I have read on the forum that I am not the only one having this trouble while the dealer has not been able to find a fix despite 2 tentative in previous visits)

Out of these issues, this BMW I4 car is perfect…😂😂😂 First BMW and last one guys! 😤😤😤
Full Option. 85 KEUR.

 

my CCU was replaced almost a year ago no issues at all.

Lemon laws require the same problem to occur multiple times, not a single instance.

 

The Lemon Law in CA applies for any instance when the vehicle is in the shop for 30 days or more. It does not require multiple issues.

 

So, two days after I thought my 2024 i4 M50 was the best and most reliable car I had ever owned, I walked out to go to work to find an entirely bricked car. The car has just over 13,000 miles on it. After the usual struggle getting a vehicle that won't go into neutral out of my garage, it spent 33 days in the shop. Repair required CCU replacement. They also discovered that the assisted driving wasn't working due to an apparent steering wheel defect, and a new steering wheel is on order to address that.

What is the collective experience here on reliability after a CCU replacement. I live in CA, where we have a very strong Lemon Law, which I am debating making use of. I still love the car, but reliability is now of concern to me. What have your experiences been? Does the CCU issue seem to be an ongoing concern with our vehicles?

I think I was one of the first CCU failures, which occurred with less than 1000 miles and one month into my '23 m50 ownership (back in Dec 2022). I have since put 38000 uneventful miles on it in 2.5 years.

 

I had the Cell Monitoring Circuit fail and be replaced in my car about 6 months ago. Similar time in the shop of 4 weeks. Would have cost a few thousands of dollars if not still under warranty. But that's been the only problem I've had with my car in almost 2 years of use. I still have just over a year left in my lease. I'll admit that the driveline failure shook my faith in the car because it left me stranded on the side of the freeway, but that's been steadily rebuilding. If the car remains problem free for the next year, I'll purchase it and keep it. If my car had as many problems as Dave's, I would definitely not keep it.

I think that the issue with the amount of time it takes to fix major driveline failures has to do with the inexperience local BMW dealers have with high voltage drivelines. I think a lot of that delay is due to having to consult with BMW corporate technical support. So I can't fault them too much for the time it took to repair my car. I'd rather have them do it right than screw up the repair or just swap parts without understanding the true problem. Hopefully these types of problems will remain rare.

 

My only EV experience is six years/130000km in 2019 BMW i3,
three months in a 2022 iX,
and 3 years/60000km in 2022 i4M50.
The least troublesome cars I ever have had.

Only issue I have had with the three cars is that the delivery of i4 was delayed 3 months because BMW found out that they had installed a batch of bad front drive units - that needed to be replaced before delivery. The i3 needed major replacements of front suspension parts at 125000 km and a new aircon compressor.

 

Here's my experience: https://www.i4talk.com/threads/drivetrain-malfunction.5947/page-34?post_id=299540#post-299540
I have had the car back since Aug 8 and have had zero problems since.