2005 BMW 5 Series Electrical System Problems

I am encountering persistent issues with my 2005 BMW 525i. Despite having replaced several critical components, including the ignition coils, spark plugs, mass air flow sensor, and throttle body sensors, the vehicle continues to experience performance problems, specifically failing to advance beyond the fourth cylinder when driving uphill. After conducting numerous diagnostic tests, I have concluded that there may be an air leak in the intake manifold. Additionally, after prolonged use under these conditions, the positive battery cable from the trunk has shown signs of overheating, evidenced by smoke, which I suspect is related to repeated uphill driving. While the vehicle performs adequately on flat surfaces, it exhibits hesitation and jerking once it surpasses the fourth cylinder.

The wiring inside of the headlights has dried up and fallen off, leaving bare electrical wire. The resulting was both of the headlights became non operational at night. To replace the headlights in the car with all the factory features is about 3200.00 for parts alone. I know of others who have had this happen, and everyone i know who owns one, has the same exact problem. The vehicle in question barely has 125,000 miles on it. I feel the manufacturer should repair these vehicles at no cost to the owners.

At approxamitately 1:20pm on July 13, after being parked for a little over an hour I was told that my car was burning. 911 was called immediately and the owner of the establishment went outside and called to the firemen at the station on the other side of the street. Their response was immediate. Response was so quick that damage was limited to the right rear. Which seems that the fire started in the area directly foreward and above the battery

GOOD EVENING ALL, SINCE 2011 I HAVE HAD ISSUES WITH THE I DRIVE SYSTEM. JUST RECENTLY, THE SYSTEM STOPPED WORKING. AFTER ATTEMPTING TO RESOLVE THE ISSUE WITH BMW OF ONTARIO, THEY DECLINED TO COVER THE VEHICLE'S I DRIVE COMPUTER MODULE. FINALLY, THE COMPUTER STOPPED WORKING AND I COULD NOT SEE MY COMPUTER DISPLAY OR LISTEN TO MUSIC. I COULD NOT RE-SET THE AIR PRESSURE ON THE TIRES. I DROVE THE VEHICLE THAT WAY FOR MONTHS. FINALLY, I WENT TO THE JUNK YARD AND FOUND A VEHICLE SIMILAR TO MINE AND REPLACED IT. EVEN THOUGH I REPLACED THE COMPUTER, I WAS NOT ABLE TO GAIN CERTAIN FUNCTIONS ON MY VEHICLE THAT CAME STANDARD WITH THAT PARTICULAR VEHICLE SUCH AS THE SATELLITE RADIO OR SPEAK TO CALL FUNCTION. I'M PRETTY SURE MANY VEHICLE OWNERS CAN RELATE TO THIS ISSUE AND THE DIFFICULTY IT HAS CREATED TO TRY AND MITIGATE WITH THE DEALER. TAKE CARE,

WHILE DRIVING TO WORK DURING MORNING RUSH HOUR IN A BUSY HIGHWAY THE CAR JUST STOPPED RUNNING. NO ODD SOUNDS NO SHUTTING NO CLUNKING. IT WAS LIKE SOME JUST TURNED THE KEY OFF. I MADE IT TO THE SIDE OF THE HIGHWAY AND HAD TO WAIT TWO HOURS FOR A TOW TRUCK TO SHOW UP. MOST OF THE WEEK PREVIOUS TO THIS MY CAR WOULD NOT START AT RANDOM TIMES EVEN THOUGH MY BATTERY WAS GOOD AND I HAD GAS. THE PROBLEM WAS THE DME HAD WATER INGRESS FROM A POOR LOCATION WHERE THE DME AND METRONIC COMPUTER AND THE INTERGRADED POWER MODULE ARE LOCATED AND STORED. THEY ARE IN A SEALED PLASTIC BOX UNDER THE CABIN FRESH AIR INLETS AND CABIN FILTERS AND THE FRONT HOOD COWL. I'M THE BOX THERE IS A FAN AT THE BOTTOM TO EXPELL MOISTER. IF THE INTERGTATED POWER MODULE STARTS TO GO THEN THE FAN STOPS WORKING OR THE FAN IT SELF GOES BAD. AT THAT POINT THERE IS ALMOST ALWAYS WATER INGRESS INTO THE DME AND OR THE METRONIC COMPUTER CAUSING THE CAR TO NOT TO RUN OR EVEN CRANK AND WITH WATER CORROSION ON THE THE DME IT CAUSES PHANTOM PROBLEMS IN OTHER AREAS OF THE CAR. THE DME IS ALSO NOT EASILY REPLACED. THE CAR HAD TO BE TAKEN TO THE DEALERSHIP AND THEY HAVE TO ORDER A NEW DME AND ALIGN IT WITH THE BE CAS MODULE FOR THE IMMOBILIZER TO WORK CORRECTLY AND FOR YOUR CAR TO START. THIS USALLY COST IN EXCESS OF $2,000 JUST FOR THE NEW DME. THE WORST PART OF THIS WHOLE THING IS I LOST MY JOB BECAUSE I WAS 4 HOURS LATE TO WORK AFTER WAITING FOR THE TOW AND GETTING A RIDE TO WORK

GOOD EVENING SIR, I AM WRITING TO YOU BECAUSE MY VEHICLE HAD BARE WIRES ON THE HEADLIGHT. THE HOT WIRE AND GROUND WIRES WERE TOUCHING. I DID NOT HAVE THE HEADLIGHT WORKING. THERE IS A PROBLEM WITH THE WIRES OF THE VEHICLE PEELING OFF AFTER A CERTAIN AMOUNT OF TIME.

TL* THE CONTACT OWNS A 2005 BMW 545I. WHILE THE SEAT HEATER WAS ACTIVATED, THE FRONT DRIVER'S SEAT BECAME EXTREMELY HOT. SMOKE WAS SEEN COMING FROM THE SEAT AND THE RIGHT SIDE OF THE STEERING WHEEL. THE SEAT HEATER WAS TURNED OFF AND THERE WERE NO WARNING INDICATORS ILLUMINATED. THE CONTACT WAS CONCERNED THAT THIS COULD CAUSE A FIRE. THE VEHICLE WAS TAKEN TO HABBERSTAD BMW NEW AND PRE-OWNED (945 E JERICHO TURNPIKE, HUNTINGTON STATION, NY 11746 (800) 997-9313) WHERE IT WAS DIAGNOSED THAT THE FAULTY HEATER WIRING, THE SEAT, AND THE STEERING WHEEL NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND STATED THAT THE VEHICLE WAS NOT COVERED UNDER WARRANTY. THE CONTACT WAS ADVISED NOT TO ACTIVATE THE SEAT HEATER. THE FAILURE MILEAGE WAS 123,000. UPDATED 08/30/17*LJ *TR

FRONT PASSENGER SEAT OCCUPANCY SENSOR HAS FAILED. REAR LEFT HAND BRAKE/BACKUP LIGHT IS PROBLEMATIC AND INTERMITTENTLY WORKS, USUALLY ONLY SHOWS UP ON CAR'S DASHBOARD WHILE IN REVERSE, BUT SOMETIMES WILL STAY ON-SCREEN DURING DRIVING. FRONT ASHTRAY OUTLET/CIGARETTE LIGHTER DOESN'T WORK.

SUNROOF DRAIN CLOGGED INTO TRUNK CAUSING FIRE IN BATTERY COMPARTMENT AND SPARE TIRE AREA. VEHICLE WAS STATIONARY IN SHOP AFTER NOT BEING RUN FOR HOURS.

HEADLIGHT WIRES ARE ALMOST BARE, AND COULD POSSIBLY SPARK AND CAUSE A FIRE.

MY IDRIVE SHOWED A MESSAGE INDICATING THAT THE AIRBAG IN THE PASSENGER SIDE WAS DEACTIVATED BECAUSE OF A SENSOR OR SIMILAR ISSUE. I TOOK THIS TO THE DEALER, ASKED FOR IT TO BE COVERED UNDER THE PREVIOUS SERVICE BULLETIN WHICH INDICATED THE SEAT MAT SENSOR WAS DEFECTIVE. THE DEALERSHIP INDICATED THEY WOULD NOT FIX IT. I CONTACTED BMW NORTH AMERICA AND THEY SAID THEY MIGHT FIX IT IF I PAID FOR THE ASSESSMENT. THE ASSESSMENT SUGGESTED THERE WAS A DEFECT IN DIFFERENT SENSOR. AND SUGGESTED THAT A BATTERY CABLE SHOULD BE REPLACED. ALL OTHER SYSTEMS IN THE CAR WORKS FINE. BOTH BMW AND THE DEALER REFUSED TO FIX THIS ISSUE. THERE HAVE BEEN NO OTHER REPORTED CASES OF THE BATTERY CABLE ACTUALLY CAUSING THE AIRBAGS TO BE DEACTIVATED. TODAY, THE AIRBAG IS STILL NOT WORKING, AND BMW HAS REFUSED TO FIX THE PROBLEM.

BMW I-DRIVE CUTS OUT WHILE DRIVING, AND BLINKS OR REBOOTS. WHILE DRIVING HOME IT CUT OUT, AND WOULD NOT STOP BLINKING. THIS DISTRACTION AND MALFUNCTION IS DANGEROUS.

ON APRIL 11, 2015. I WAS TAKING MY VEHICLE TO MY MECHANIC TO GET IT SERVICED AFTER SITTING ALL WINTER. AS I WAS DRIVING I NOTICED SMOKE COMING FROM THE REAR OF THE VEHICLE. I PULLED OVER, COULD NOT LOCATE THE SOURCE. I CONTINUED TO MY MECHANIC. ONCE THERE WE OPENED THE TRUNK, WE NOTICED AND SMELLED SOMETHING BURNING. WE TOOK OUT THE TIRE AND NOTICED WATER IN THE WHEEL WELL, WHICH MADE AN ELECTRICAL COMPONENT SPARKING, SMOKING AND ON FIRE. I HAD THE VEHICLE TOWED TO BMW. THEY STATED THE WATER DAMAGED THE MICRO POWER MODULE. BMW PAID FOR THE REPAIRS, AND RELOCATED THE MODULE AWAY FROM THE WHEEL WELL. I FEEL WHERE IT WAS PLACED PREVIOUS WAS VERY DANGEROUS. IF I HAD ANY COMBUSTIBLE ITEM IN MY TRUNK MY BMW WOULD HAVE FULLY CAUGHT FIRE. BMW SHOULD RECALL ALL VEHICLE AND RELOCATION ANY ELECTRICAL COMPONENTS THAT CAN BE DAMAGED BY WATER, POSSIBLY CATCH FIRE. THIS IS VERY DANGEROUS

THE MICRO POWER MODULE IN THE TRUNK WAS BURNT ON MY 2005 530I, NOW MY IDRIVE / AUDIO / NAV AND PDC HAS SHUT DOWN. CAR STARTS AND DRIVES NORMAL, EXCEPT THE PREVIOUSLY MENTIONED ACCESSORIES THAT NO LONGER WORK, WHO KNOW WHAT OTHER DAMAGES (IF ANY) RESULTED FROM A MPM MELTDOWN. I'VE READ SOME HORROR POSTS OF SIMILIAR EVENTS THAT CAUSED EVERYTHING ON THE VEHICLE TO SHORT OUT, WHICH MEANT THAT BASICALLY EVERYTHING CCC / M-ASK / TV MODULE / CD ETC. WHEN THIS HAPPENED ON MY VEHICLE, THE CAR WAS ACTUALLY SWITCHED OFF. IT WAS ONLY WHEN I GOT BACK TO THE CAR THE NEXT MORNING WHEN I GOT THIS STRONG ELECTRICAL BURN SMELL FROM THE TRUNK AREA. THE MPM PROBABLY SHORTED OUT DURING THE COURSE OF THE NIGHT. LUCKILY THE CAR DID NOT CAUGHT ON FIRE, CAUSE IT COULD HAVE THEN BURNED DOWN MY APARTMENTS AS WELL, AS THE CAR WAS PARKED NEXT TO MY APARTMENT. FROM WHAT I COULD VISUALLY ACCESS, ONLY THE MPM UNIT BURNED OUT COMPLETELY AND MELTED. I JUST HOPE THAT I KNOCKED THE MPM OUT BEFORE IT COULD CAUSE ANY MORE DAMAGE TO THE CAR'S OTHER ELECTRONICS. MY CAR IS UNFORTUNATELY NO LONGER UNDER WARRANTY. THE CAR HAS ALREADY BEEN TAKEN INTO MY LOCAL DEALERSHIP TO ACCESS THE DAMAGE AND TO GIVE ME A QUOTE TO REPAIR, BUT THEY DID INFORM ME THAT IT IS GOING TO BE A COSTLY AFFAIR. I FIND IT VERY INTERESTING THAT BMW DECIDED TO MOVE THESE MODULES NEWER MODELS FROM THE TRUNK AREA TO THE BODY GATEWAY MODULE WHICH IS A MUCH SAFER ENVIRONMENT. MAKES YOU THINK THAT THEY REALIZED THAT THERE WAS A DEFECT WITH THE VEHICLE IN PLACING THEM THERE IN THE FIRST PLACE. DON'T KNOW IF IT'S SAFE TO DRIVE ON THE ROAD DO TO THE DANGER OF ELECTRICAL FIRE. I ALSO HAVE PICTURES AVAILABLE. *TR

THIS HAS BEEN HAPPENING TO OTHER 2005 BMW 530I OWNERS. WHILE BRAKING VEHICLE IDRIVE GAVE WARNING THAT REAR DRIVER SIDE BRAKE LIGHT FAILED AND THEN THAT THE REAR LIGHT HAD A MALFUNCTION. UPON LOOKING AT THE WIRING HARNESS ATTACHED TO THE TAILLIGHT BULB CARRIER, THE BROWN WIRE IS BURNT OUTSIDE OF THE HARNESS. THE RUBBER COATING OF THE WIRE IS BURNT THROUGH AND THE WIRE IS EXPOSED. THE PLASTIC WIRE HARNESS IS BURNT AND MELTED. THE TAILLIGHT BULB CARRIER IS ALSO BURNT AND MELTED. EXACTLY WHAT HAS HAPPENED TO MY CAR. THE GROUND WIRE HAS WAY TOO MUCH CURRENT ON IT RESULTING IN MELTING AND POSSIBLE FIRE. *TR

WHILE BRAKING VEHICLE IDRIVE GAVE WARNING THAT REAR DRIVER SIDE BRAKE LIGHT FAILED AND THEN THAT THE REAR LIGHT HAD A MALFUNCTION. UPON LOOKING AT THE WIRING HARNESS ATTACHED TO THE TAILLIGHT BULB CARRIER, THE BROWN WIRE IS BURNT OUTSIDE OF THE HARNESS. THE RUBBER COATING OF THE WIRE IS BURNT THROUGH AND THE WIRE IS EXPOSED. THE PLASTIC WIRE HARNESS IS BURNT AND MELTED. THE TAILLIGHT BULB CARRIER IS ALSO BURNT AND MELTED.

I TURNED MY CAR ON AND IT IMMEDIATELY WARNED ME THAT MY LEFT READ BRAKE LAMP WAS NOT FUNCTIONING. TO BE SPECIFIC, THERE WERE FOUR WARNING LIGHTS ON: ONE FOR THE REVERSE LIGHTS, ONE FOR THE BRAKE LAMP, AND TWO OTHER ONES. ALL FOR THE LEFT LIGHT. I OPENED IT UP AND IMMEDIATELY OBSERVED THAT THE WIRING HARNESS PLUG WHERE THE WIRING MEETS THE BULB HOLDER HAD SHORTED AT THE GROUND WIRE. THE TWO PIECES WERE MELTED TOGETHER, SUGGESTING THERE MAY HAVE BEEN A SMALL FIRE. BITS OF MELTED PLASTIC FELL ALL OVER THE PLACE WHEN I MANAGED TO FINALLY PULL OUT THE PLUG. *JB

SAME ISSUE AS EVERY OTHER 2005 530I OWNER HAS HAD. MY BATTERY WAS LOW AND NEEDED REPLACED AND AFTER A NEW BATTERY WAS PURCHASED AND INSTALLED THE FAULT LIGHT CAME ON THE I-DRIVE SYSTEM FOR THE AIRBAG. BMW DEALER REFUSES TO DO ANYTHING ABOUT IT AS MY VEHICLE IS NOT INCLUDED IN THE RECALL.. I DON'T UNDERSTAND WHY WHEN THERE ARE NUMEROUS COMPLAINTS ON A FAULTY SYSTEM WHY THIS SHOULD NOT BE REPAIRED, OBVIOUSLY THEY KNOW THAT THE ISSUE IS THERE BUT DO NOT WANT TO SPEND THE MONEY TO FIX THEIR ISSUE. SO MUCH FOR THE GERMAN ENGINEERED ULTIMATE DRIVING MACHINE. WITH ALL OF THE TECHNOLOGY COMES ALL OF THE ISSUES IT WOULD BE NICE TO SEE A MANUFACTURER STAND BEHIND THEIR CAR FOR A CHANGE.......IF I FAILED TO MAKE A PAYMENT THEY WOULD HAVE SURELY REPOSSESSED IT......FUNNY HOW WE CANNOT GET SOMETHING FROM THEM WHEN THEY FAIL. *TR

MY CAR HAVE AN OVERHEATED CABLE CONNECTION AND IS CAUSING INCREASED ELECTRIC RESISTANCE, WHICH IS A RECALL AND ALSO THE PASSENGER AIRBAG LIGHT IS ON AND BMW REFUSE TO FIX THE ISSUES.. THEY SAY MY VIN WASN'T ONE OF THE CAR THAT'S IN THEIR DATABASE FOR THE RECALLS........ *TR

MUCH LIKE THE OTHER COMPLAINTS, I JUST COPIED AND PASTED THIS FROM ANOTHER COMPLAINANT. THE PASSENGER RESTRAINT SYSTEM MALFUNCTION ALARM CAME ON THE IDRIVE. THE DEALER SAYS THAT THE VEHICLE IS NOT COVERED UNDER RECALL. HOWEVER, THE RECALL ID #73368 EXACTLY MATCHES THE DESCRIPTION OF MY PROBLEM. THEREFORE, WE BELIEVE THAT OUR VEHICLE SHOULD BE COVERED. PLEASE ADVISE HOW TO GET THIS RESOLVED AS SOON AS POSSIBLE SO THAT I CAN GET THE CAR FIXED. WE ARE CONCERNED BECAUSE IT'S A SERIOUS SAFETY ISSUE WHEN THE FRONT AIR BAGS WILL NOT COME ON IN CASE OF AN ACCIDENT. I WENT AS FAR AS TO SPEAK WITH BMW DIRECTLY AND THEY SAID IT ONLY GOES TO THE 2004 MODELS, AND THEN TO THE 2006 MODELS....YEA, WHATEVER. IT'S A SAFETY RECALL, THEY SHOULD HONOR IT, AND BMW IS COMPLETELY INFLEXIBLE WHEN IT COMES TO THEIR CUSTOMERS. IT'S A SHAME NOT ONLY WILL THEY NOT HELP, THEY WANT TO CHARGE OVER $1000 TO THE CUSTOMER FOR A RECALL PART. I'M TRADING MY OTHER BMW IN ON ANYTHING BUT ANOTHER BMW AND WILL DRIVE MY AFFECTED 530I UNTIL IT REACHES THE SCRAP YARD. *TR