hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
48,134 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 BMW Z4 seat belts / air bags problems

seat belts / air bags problem

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2004 BMW Z4 Owner Comments

problem #13

Feb 052016


  • miles


Passenger airbag module seems to be defected.

- Potomac, MD, USA

problem #12

Aug 152015


  • miles
The contact owns a 2004 BMW Z4. The contact stated that while parked and seated in the drivers side of the vehicle, the air bag independently deployed. The contact stated that the vehicle was able to be driven to the residence and then towed to the dealer where the contact but the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was unknown. The VIN was not available.

- Yardley, PA, USA

problem #11

Sep 272015


  • 57,425 miles
After cranking my 2004 Z4 in the drive way, my wife in the car with me at the time, the drivers side airbag went off for no reason. Had just put the car into reverse to back it up and then "pow" sounded like a gunshot going off. I looked over to see my wife panicked as she was stunned that this went off right in her face. It scuffed her arm a bit and got the powder residue in her face. This car has been driven very little, only about 6000 miles a year roughly. This kind of thing should not happen. The car had not even moved it was just put into reverse and then it unexpectantly exploded. I had previously taken the car in to check on a recall they had on some vehicles for the airbag mat in the passenger side, was told that my model was not effected. I think that may have been a lie, and if was not a lie then it clearly should have been included in the recall.

- Prattville, AL, USA

problem #10

Apr 282014

Z4 6-cyl

  • 63,000 miles


Takata air bag light stays on and makes a ticking noise.

- Huntington Beach, CA, USA

problem #9

Oct 312014

Z4 6-cyl

  • 18,835 miles
Passenger air bag exploded and busted wind shield.

- Islamorada, FL, USA

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problem #8

Jul 222014

Z4 6-cyl

  • 97,684 miles
My passenger-side airbag literally "exploded" as I was walking up to my car this morning. Of course, I didn't realize that was what it was until I unlocked my car and opened the door. The airbag was exposed and there was "smoke" in the car. It appears what happened is the exact reason given for recalling the 3 series vehicles due to the takata airbag problem, the reason given are incidents such as this occur in Florida and puerto rico due to the high heat and humidity. See usa today article: www.usatoday.com/story/money/cars/2014/07/16/BMW-takata-shrapnel-NHTSA-recall/12729929/ !....updated 07/31/14

- Jacksonville, FL, USA

problem #7

Jul 052011

Z4 6-cyl

  • 70,000 miles


The contact owns a 2004 BMW Z4. The contact stated that the air bag light illuminated on the passenger side. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the problem. The approximate failure mileage was 70,000. Updated 09/02/14 updated 09/17/2014

- Alamada, CA, USA

problem #6

Jul 012011


  • 47,000 miles
Passenger's airbag indication light is malfunctioned. The indication light of passenger's airbag shows always off. Therefore it can't tell the airbag is on or off.

- Alameda, CA, USA

problem #5

May 202013


  • 67,000 miles
The contact owns a 2004 BMW Z4. The contact stated while the vehicle was parked the engine was in operation and the front driver's side air bag inadvertently deployed with an illumination of the passenger's side warning indicator. The vehicle was towed to an authorized dealer who stated that the malfunction was contributed to water leaking into the air bag sensor. The manufacturer was notified of the defect. The vehicle currently remained at the dealer for further investigation. The approximate failure mileage was 67,000. The VIN was unavailable.

- Columbia, SC, USA

problem #4

Sep 272012

Z4 6-cyl

  • 38,300 miles
Airbag deployment while vehicle in motion. 9/27/2012 approx. 6:20pm had one of the passenger side airbags deploy without warning while vehicle was being driven. No accident involved, no striking curb, no pothole...nothing untoward. BMW dealer now has vehicle to determine cause of malfunction. I have requested that BMW North America have a representative inspect the vehicle to assist in determining cause of this malfunction and to pass along his findings to the appropriate individuals at BMW. Had one of the driver's side airbags malfunctioned and deployed while this vehicle was being driven, the results could have easily been catastrophic!

- Pinellas Park, FL, USA

problem #3

Jun 012011


  • 40,000 miles


The contact owns a 2004 BMW Z4. The contact stated that the air bag warning lamp illuminated sporadically. The vehicle was taken to the dealer who was unable to diagnose the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 40,000 and current mileage was 50,000.

- Alameda, CA, USA

problem #2

Sep 192011

Z4 6-cyl

  • 91,500 miles
When I was driving home from work today my car experienced a power steering issue where the steering wheel would "freeze" or "stick" in one place. I had to exert a lot of force on the wheel to get the steering wheel to move but when it "broke free" it turned a lot with the help of the power steering pump because I was putting so much force on the wheel to get it to move. I had a hard time keeping the car in my lane. The power steering was doing this the entire drive home of 20 miles. The car was very unsafe to drive and this issue needs to be fixed since it is a hazard. If the power steering was just not working at all, it would be okay because then at least the steering wheel would be hard to move all of the time so I could control how much I turned the steering wheel accurately. Since the power steering works "intermittently" but only after I apply a lot of force on the wheel to get the wheel to break free, the car veers violently when the power steering actually does work. This problem is very common per the website and should be recalled. This failure is reported to the NHTSA on cars ranging from 15,000 miles up to over 100,000 miles. The problem from what I was reading, is more evident in cold or hot temperatures. It was 102F outside today in phoenix on my drive home. The passenger air bag seat sensor was flashing on and off when there was a passenger. The air bag malfunction light turned on after this. I do not know if the airbag will inflate if there is a passenger in the car or not. BMW states my car is not covered under the recall according to the VIN but the car fits the model, make, and year of the present recall. How can my car have the same problems as the recall describes, be the same make/model/year, but not be covered under the recall? thanks for your time! [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6)

- Glendale, AZ, USA

problem #1

Sep 082011


  • 35,000 miles
The contact owns a 2004 BMW Z4. When the contact started the vehicle, the front passenger air bag off indicator illuminated. The failure occurred whenever the engine was in operation and remained illuminated until the engine was turned off. The vehicle was taken to an authorized dealer who stated the constant failure was contributed to a faulty passenger occupancy seat mat sensor. The vehicle was repaired and the contact planned to notify the manufacturer regarding the defect. The approximate failure mileage was 35,000.

- Grandy , MA, USA

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