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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 03-31-2011, 07:51 PM
envy_deadly envy_deadly is offline
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Post How Long Should a battery last?

How long should a battery last on a bmw? is it the normal range like any other car (5 years) Is there anyway to preserve battery life? (first time owner i would like sum advice on this amazing german engineering)
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  #2  
Old 03-31-2011, 07:59 PM
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RaceBlood RaceBlood is offline
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Mein Auto: 2007 335i Coupe 6MT
It all depends on climate, use, weather, etc...3 years minimum, 5 years average, more or less.
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  #3  
Old 03-31-2011, 08:06 PM
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AzNMpower32 AzNMpower32 is offline
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There are a lot of variables especially with these newer BMWs that have complex modules and power management systems. Your vehicle options will also affect battery life. Suggestions:
  • Short-distance, low-speed drives can rapidly deplete the battery. At least once a week, do a nice, long highway drive if you do less than 10-20km commute.
  • Shut off unnecessary electric equipment. For example, once the seats are warm enough, try shutting off the seat heaters. Once the rear windshield is clear, shut off the rear defroster. Nice day with open windows? Turn off the climate control.
  • If you're going to be vacuuming or cleaning the car, turn off the interior lights (just a suggestion, not a huge deal)
  • Lock the doors when leaving the car in the garage. Puts it in sleep mode quicker.

We have a 2006 325i with Comfort Access and most electrical options (sans iDrive) and its still on its first battery. I think 4-5 years is pretty good with the 3er.

Do a search, but if you replace the battery, you need to go to the dealer or an indy shop to reset the battery management system so the car "recognises" the fact you've changed the battery. Doesn't mean you have to buy the battery at the dealer, you just need someone with diagnostic equipment to reset.

My 02/04 build X3 with the older, less battery-intensive system is still on its first battery after over 7 years and 103k miles (165tkm). Lot of electrics and parked primarily outside. Yet battery still goes pretty strong (I seriously should stop gambling with it though)
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Last edited by AzNMpower32; 03-31-2011 at 08:08 PM.
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  #4  
Old 03-31-2011, 08:49 PM
Lufthansa Lufthansa is offline
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Can the battery water level be checked in a '10 328?
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  #5  
Old 03-31-2011, 09:03 PM
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bluebee bluebee is offline
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Just for comparison with the E39 side of the house, my BMW battery has been in since 2005 and is still going strong (AFAIK).

If your 3-series' batteries are similar to ours, you can test them rather easily:
- DIY how to test a BMW E39 battery & alternator
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Old 03-31-2011, 09:14 PM
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pointandgo pointandgo is offline
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Quote:
Originally Posted by envy_deadly View Post
How long should a battery last on a bmw? is it the normal range like any other car (5 years) Is there anyway to preserve battery life? (first time owner i would like sum advice on this amazing german engineering)
On my 2000 E39 528i: 4 yrs
On my 2005 E46 M3: 4 yrs
Neither car had any electrical aftermarket parts. Conditions: Southern Calif. driving, daily communting to work 60+ mi. per day.
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Old 04-01-2011, 08:54 AM
slant83 slant83 is offline
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Mine lasted 2 years (hot Florida weather). BMW came to my driveway and dropped in a new battery on the spot!!! All I had to do was register it at my next dealer visit
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Old 04-01-2011, 09:12 AM
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Route 66 Route 66 is offline
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I replaced the battery a year and a half ago in my 2001 and that was the original battery.
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Old 04-01-2011, 09:38 AM
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guerilla twang guerilla twang is offline
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Original battery in my 2006. Zero cold start problems, or long cranks.
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Old 04-01-2011, 09:56 AM
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hpowders hpowders is offline
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Mein Auto: E90, Porsche 911, VW GTI
In my 2005 545i, I had a battery go dead after only 2 years. The car was ordered new from the factory. My SA attempted to blame my driving style as the cause. I let my fingers do the walking and called BMW Corporate. A few days later I had a new free replacement battery and a choice of $200 worth of items from the BMW gift catalog.
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The E90 sedan is the last in the line of great 4 door 3 Series BMW's. Too bad.

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Old 04-01-2011, 10:17 AM
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carve carve is offline
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Mein Auto: 07 335i E90
Mine laste exactly 4 years. Moderate climate, ~10 mile commute. All the electronics on this car (computers, water pumps, electric valves, seat heaters, big stereo, comfort access, etc.) put more load on the battery, so it won't last as long as on a simpler car (normally get 6-7 years on my Jeep)
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Old 04-01-2011, 10:30 AM
mikee330xi mikee330xi is offline
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Quote:
Originally Posted by envy_deadly View Post
How long should a battery last on a bmw? is it the normal range like any other car (5 years) Is there anyway to preserve battery life? (first time owner i would like sum advice on this amazing german engineering)
I changed my battery on my 06 330xi after 5 years. I live in Canada so winters are tougher on batteries. Could of probably squeezed another year out of it but there's nothing worse than being stuck with a car that wont start. I believe you're better off changing every 5 years, just like any other battery. The bonus is you get to pay 4 times the price of a regular battery! Welcome to BMW...
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Old 04-01-2011, 10:35 AM
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mgthompson mgthompson is offline
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Mein Auto: M-Sport128i 328xiT 3.0CS
The battery in our '08 328xi lasted 2 years and was replaced under goodwill.
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