Question about 1984 BMW 5 Series

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How to reset bmw 545i computer when you change battery

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Having the battery disconnected for half an hour or so will drain the capacitors in the ECU. Connecting a battery at that point puts the computer into relearn mode automatically.

Posted on Nov 19, 2009

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Posted on Jan 02, 2017

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Gypsybaron
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SOURCE: I cannot start BMW 545i normally.

Your car battery is dead. Or the cable from the battery to the 12V terminal has a bad connection.

Posted on Jul 06, 2009

c1apton15
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SOURCE: How do you reset the

you need to have it reset by dealer, shop or parts store that has OBII scanner. Good parts stores will do it for FREE

Posted on Jan 05, 2011

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SOURCE: 2004 bmw 545i dead battery had dealer install new

LMAO take it back to the dealer and tell him to reset the ECM since he was stupid enough to onhook the battery and not reset it!

Posted on Jan 13, 2010

  • 880 Answers

SOURCE: Where is the battery located on a 2005 BMW 545i?

On the right hand floorboard of the trunk under the lining.

Posted on Jan 01, 2010

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How do you reset the active steering warning light when the battery has been replaced in a 2004 BMW 545i ? Adrian


you need to have it reset by dealer, shop or parts store that has OBII scanner. Good parts stores will do it for FREE

Jan 05, 2011 | 2006 BMW 545i

2 Answers

Battery location on a 2005 BMW 545i?


The battery location for a 2005 BMW 545i is in the trunk. Open your trunk, and on the right side of the car (passenger), look for two black plastic screws (flathead fit) along the paneling. Use a flathead (from the tool kit amongst the trunk lid), or a paper-clip to turn both of these plastic screws 90 degrees, you should be able to pull these out with your fingers afterwards. The plastic screws hold in the protective paneling, you'll have to to lift up trunk-liner (covers your spare tire), then pull the paneling outwards; underneath, you'll find the battery and terminals.

Jul 12, 2010 | 2006 BMW 545i

1 Answer

My battery light started to come on in my 2003 bmw 325xi. i had a new altanator put in twice in the last 45 day as well as a new battery. the problem keeps coming back. eventually my dash lights up and...


if the battery was disconnected , the computer might need to be reprogrammed from a authorized mechanic ..This process take 8 to 16 hours... BMW changed my battery in my 545i & didn't program my computer. The transmission was shifting wrong & they said I needed a new transmission ... I took it to a different mechanic & found out the computer needed to be programed .

May 09, 2010 | BMW 325 Cars & Trucks

2 Answers

2004 bmw 545i dead battery had dealer install new battery now i have 2nd gear jerking with my autotransmission


LMAO take it back to the dealer and tell him to reset the ECM since he was stupid enough to onhook the battery and not reset it!

Jan 13, 2010 | 2004 BMW 5 Series

2 Answers

Where is the battery located on a 2005 BMW 545i?


should be under the rear seat on the right hand side. happy new year

Jan 01, 2010 | 2006 BMW 545i

1 Answer

I cannot start BMW 545i normally.


Your car battery is dead. Or the cable from the battery to the 12V terminal has a bad connection.

Jul 06, 2009 | BMW 545 Cars & Trucks

1 Answer

2004 BMW 545 active steering fault


after replacing the battery, battery replacement has to be registered in the power module.Newer bmw's can experience battery draw issues. usually after battery replacment the active steering has to be re-aligned. you can try turning the steering wheel lock to lock to see if that solves your problem (usually only works on older cars) if you can find a shop that has a GT1 (bmw's older diagnostic equipment) they should be able to reset the light. At the same time if the vehicle has a battery draw and the power module is disconnecting the battery when the charge level gets low,that is your root problem and you will end up with an active steering fault over and over

Apr 11, 2009 | 2006 BMW 545i

1 Answer

Battery Location of 2005 545I


earlier 5 series bmw's have battery under back seat passenger side

Nov 12, 2008 | 2006 BMW 545i

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