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2004 BMW 645CI problems

The most common problem on the 2004 BMW 645CI is airbags, typically around 56,555 miles. Its complaint count is close to a typical 645CI model year.

Typical yearClose to a typical year
Year score
75/100
Owner complaints
11
Recalls
0
Service bulletins
45
Worst area
Airbags

The worst 2004 BMW 645CI problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

  • Airbags
    5
  • Seat belts
    4
  • Electrical
    3
  • Brakes
    2
  • Engine
    2

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

  • Airbags
    5
  • Seat belts
    4
  • Electrical
    3
  • Brakes
    2
  • Engine
    2
  • Seats
    2
  • Driver assistance
    1
  • Steering
    1
  • Transmission
    1
  • Wheels
    1

Recalls

No recalls on record for this model year.

Technical service bulletins for the 2004 BMW 645CI 45

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 45 bulletins for the 2004 BMW 645CI

What 2004 BMW 645CI owners say

Most recent owner complaints, unedited.

Filed Mar 26, 2024 · Wheels · NV

My Bmw got impounded illegally from my location where I rent commercial space and there is no signs saying car wheel be parked there at 12 at night this was an illegal tow by tow guys 3823 losse rd 702 598 1630 I payed $474.64 to get my car out impound

Filed Sep 6, 2021 · Electrical, Engine · AL

The idrive system in my car continues to cut on and off, this eventually caused my car to shut off on me two times while in traffic with no warning or indication of the shut off. The sensor alert continuously goes off for everything in the car. I took my car to the BMW dealership in Huntsville Alabama, they had my car for almost a month and could not find the issue with the drive or anything the sensors were notifying me of. The system constantly says my car is overheating, but I just got the radiator hose fixed and the dealership checked it for leaks while they had it and they did not see any other leaks or any other issues causing it to overhear. I researched this issue on a BMW form and I see this is a common issue with the electrical system. This issue is very alarming to me because the sensors do not work properly so I wouldn’t know what is really wrong with the car and with all the electrical issues I am afraid the car might catch on fire. I can’t believe this problem is so common and he has not been recalled due to the safety and the devastating results it could cause it’s gone unnoticed for so long. I would hate for someone to lose their life, regarding this faulty issue in this car; these cars are not cheap no matter how old they are so I feel like BMW should stand behind their product and stop selling us faulty unsafe vehicles. We pay good money for these cars, this issue really needs to be fixed. I have a video of the iDrive system cutting on and off with the sensors alerting but this does not give me the option to upload a video. In addition the seatbelt will not retract in this car so it is not able to be worn properly. Also the engine seems like it is revving up sometime as if it wants to takeoff on its own. I have only experienced this issue a couple of times but not as much time as the iDrive issue mention above. Please assist in anyway you can I would really appreciate it. Have a great day!

Filed Aug 6, 2018 · Airbags, Seats · AL

Passenger seat oc3 occupancy mat not working-it shows a fault code- I took it to birmingham bmw and was told I have to get a new bmw battery and battery cable.they charged me $ 120 to diagnose this problem but did nothing to fix the oc3 mat that is faulting.I have checked on line and this does nothing.

Filed May 3, 2017 · Driver assistance, Seat belts · 75,000 miles · TX

Active steering malfunction, airbags lights, stable controll steering wheel is cocked about half turn to drive streight.

Filed Mar 27, 2015 · Airbags · 61,000 miles · FL

I have warning light when I turn on my car that the passenger restraint and airbag is inactive and this should be a recall... This is safety not a luxury option... Bmw advised me that it was some sensor and I asked if I was in a car accident will the airbags deploy they said there is a high chance it would not and also the seat belt could fail as well... I seen other people with the same complaints!! This is a safety feature not a option!! Please look into it!! Being a convertible and no airbags in a accident is a death waiting to happen!!!

Filed Nov 19, 2014 · Airbags · 115,587 miles · VA

Tl* the contact owns a 2004 bmw 645ci. When the vehicle was started, the air bag warning light illuminated. The dealer stated that the vehicle was operating as designed. The failure recurred. The manufacturer was notified of the failure. The failure mileage was 115,587.

Filed Jun 21, 2014 · Airbags, Electrical · 56,555 miles · FL

I have the same problem in which this is the number you have provided but not including my yr. It was only for 2006 models and I have a 2004 but same exact problems. I have read and seen others with the same problem. Some dealerships honored the recall or "service offer" but they will not for me and this is a safety issue not a luxury option. The federal safety agency action number : ea08001 the federal safety agency recall campaign number : 08v384000.

Filed Dec 2, 2013 · Airbags, Seat belts · 37,260 miles · AL

Passenger restraint system failure fault light has started showing on my bmw. There has been a recall reported on the same component "statement on voluntary recall involving front passenger seat sensor mat on u.s.a. Model bmws - august 13, 2008". It is the federal safety agency recall campaign number: 08v384000. I have the same problem so I called bmw and they stated that my car is not part of the recall. I do not understand how my car is having the exact same problem but is not part of the recall? This is a huge safety issue. I think bmw should be held responsible and should be required to correct this faulty mat sensor problem before someone is injured. I am afraid to carry passengers in my car for liability reasons.

Filed Nov 16, 2012 · Brakes · 150,000 miles · CA

Tl* the contact owns a 2004 bmw 645ci. The contact stated that the vehicle was repaired under the federal safety agency campaign id number 10v446000 (service brakes, hydraulic:power assist:vacuum). The contact stated that a year after the repairs were completed, a brake failure occurred and there had not been a failure present before the vehicle was serviced under the recall. The vehicle was taken to the dealer where it was confirmed that the master cylinder and booster had failed. The vehicle was not repaired. The manufacturer was contacted about the issue. The failure mileage was 150,000 and the current mileage was 150,100. Updated 02/20/13*lj updated 02/20/2013

Filed Jun 27, 2012 · Brakes · 90,000 miles · TX

Tl* the contact owns a 2004 bmw 645ci. The contact stated that while driving approximately 30 MPH, the brake pedal was applied; however there was no response. The contact repeatedly engaged the brake pedal and then engaged the emergency brake. The vehicle came to a complete stop. The vehicle was then taken to an independent mechanic, who stated that there was a recall associated with the federal safety agency campaign id number 10v446000 (service brakes, hydraulic:power assist:vacuum). The vehicle was then towed to an authorized dealer and they stated that the power booster would need to be replaced. The dealer would not honor the recall for an unknown reason. The vehicle had not been repaired. The manufacturer was notified of the failure. The approximate failure mileage was 90,000. The VIN was unavailable.

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Questions about the 2004 BMW 645CI

Is the 2004 BMW 645CI reliable?

Owners have filed 11 complaints about the 2004 BMW 645CI, close to a typical 645CI model year.

What is the 2004 BMW 645CI year score?

The 2004 BMW 645CI scores 75 out of 100 (average). The score compares it with the other model years of the BMW 645CI: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.

What is the most common problem with the 2004 BMW 645CI?

Airbags, with 5 complaints, typically around 56,555 miles. Next is seat belts (4).

How many recalls does the 2004 BMW 645CI have?

No recalls on record.

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