Question about 2003 BMW 7 Series

2 Answers

I need to replace my BMW 03 745li battery, do i need to get a dealer to do it? or can i just purchase the battery and replace myself with out having problems with the electronics in the vehicle?

Posted by on

Ad

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 146 Answers

When change the batterie in BMW 7 (E-65) must register in the original BMW diagnostic of power modul box unit. Only then will work with the right vehicle electronic energy !!!!!

Posted on Dec 12, 2010

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Teacher:

    An expert who has written 2 tips or uploaded 1 video tip.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 72 Answers

Yes you can do it your self.

Posted on Aug 02, 2010

  • Jan Linek
    Jan Linek Dec 12, 2010

    This reply from leanburn is FAKE!!!!!!!!!! When change the batterie in BMW 7 (E-65) must register in the diagnosis of power box unit! Only then will work with the right vehicle energy !!!!!

  • TONY SMITHE Nov 18, 2012

    is replacing the battery in the Keys (2004 745li) a DIY thing?

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Error code 2f44 bmw won't start tried to clear but comes back after every crank


Fault code: 2F44 EWS preventing manipulation.
This is a common fault code flagged by BMW vehicles when the EWS (also known as the CAS module or immobilizer) no longer communicates with the DME.
Some of the most common causes, for this condition, is battery failure or ignition key failure.
Many times, a customer will bring a BMW into the shop or have it towed into the shop, and explain that "the car just won't start, suddenly". Upon further investigation, it is common for a technician to find poor battery condition or a failed ignition key.
In the case of poor (low) battery condition. A low voltage level has caused the immobilizer (CAS/ EWS) to lose its alignment with the DME.
In the case of a failed key, the immobilizer (CAS/EWS) cannot "see" the key in the ignition and therefore will not allow the vehicle to start. This is the "no crank" part of this fault.
So where do we start?
Using a factory level scanner, connect to the vehicle. After identifying the vehicle, proceed to the immobilizer module (CAS/EWS) and investigate if the key can be identified. If the key in the ignition slot cannot be identified and the key slot/ receiver is functioning correctly, then the key must be replaced. Typically, at this point, the first thing we want to do is ask the customer if another valid key is available. If so, let's try this first! If not available, a NEW key FROM THE DEALER, must be purchased.
NOTE: Aftermarket keys will not work i.e. E bay etc. The keys for these cars are VIN specific and need to be supplied by the dealer only!
A new key will work "right out of the box" from a dealer. Simply put it in the ignition, allow the vehicle to identify it (give it about ten seconds) and try a startup.
After replacing the key and regaining key identification the immobilizer (CAS/EWS) must be aligned with the DME.
Using a factory level scanner, perform the DME to CAS/EWS immobilizer alignment procedure. Clear fault code(s).
So, what about the battery?
All the above information is based on having strong battery voltage. In regards to BMW vehicles, 11.0 volts is NOT good voltage. These vehicles are designed to operate in the 12.4 to 13.0 (average) voltage area.
Before attempting to start the engine, a technician should perform a battery load test. When working with BMW vehicles, if the battery is marginal or too old (more than three years old) replace it.
NOTE: New batteries for later model BMWs (CIP vehicles from approx. 2004) will need to be registered. With a dealer level scanner, a tech can perform this function.
Note: As time passes BMW will change the way immobilizers are aligned. Typically, this happens when BMW changes manufacturers. If performing a standard CAS /DME alignment does not work, A later procedure is available. With late model (EWS 3 type onward) immobilizers, the tech must perform a three-step procedure. Using a dealer level scanner, carry out 1) CAS reset, 2)steering lock counter reset 3) reset the starter interlock.

May 04, 2014 | Cars & Trucks

1 Answer

2006 bmw 530i horn wont work , window wont let down and wipers wont turn off


Not my expertise, but if the battery has been replaced you will have to go to a dealer.Then your car talks to Stutgart or Nurenburg and speaks some binary language. The dealer will charge to a crazy fee and it will work until you need another battery.
You can avoid this nonsense by purchasing an adaptor that plugs in the cigarette (oh my gosh xxxx) lighter and uses a 9v battery.
If it is the same old battery, I just wasted 5 minutes of your time.

Apr 08, 2014 | 2006 BMW 530i Sedan

1 Answer

How to register replace new battery for bmw 2007 525i


Hi dnguyen,

The battery register replacement needs to be performed with diagnostic equipment either by an independent or dealer.

Jun 11, 2011 | 2006 BMW 5 Series

1 Answer

Where can i find the battery for the key in a 2001 bmw 325ci, i want to replace it myself just need to find the battery not found in any store whatsoever


Hi these do not have a battery that you replace, the battery is charged when the key is in the ignitionso the more you use it the more it charges thats why when you have more than one of these keyes you are supposed to alternate there useagge to give each an equal share of charging, if your key is not working it might just need a re-program hope this helps

May 22, 2011 | 2001 BMW 325

2 Answers

Computer says 'trans fail safe prog'


Your car is in "LIMP" mode. The computer sensed a fault from transmission and has set it in "LIMP" mode so it's still drivable but it needs to be inspected by BMW. It could be something as simple as a dirty connection or moisture or possible early warning a more serious issues, but have BMW dealer look at it before it gets REALLY costly and leaves you stranded.

Feb 18, 2011 | BMW 7 Series Cars & Trucks

2 Answers

Hi my 06 BMW 325i the battery went dead on my car...


When inside your car is it a the IBS (intelligent batery sensor) what this is the all recharging controlls. Battery must a registrated to car memory when new is where after change to empty battery! In diagnostical tools only! Car remember so how a old empty battery and recharging no good!

WARNING: Use you AGM specially batterie with fibre glass for your BMW attached only!

May 20, 2010 | 2006 BMW 3 Series

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

2001 BMW 525i - Not starting - Is it a dead battery?


THE BATTERY IS LOCATED IN THE RIGHT SIDE OF THE TRUNK IN A COMPARTMENT .... COULD BE THE BATTERY IS DEAD AND NEEDS TO BE REPLACED.... JUMP STARTING YOUR CAR CAN LEAD IN SERIOUS ELECTRICAL PROBLEMS .... YOUR BEST BET IS TO GO TO YOUR LOCAL BMW DEALER AND PURCHASE A NEW BATTERY

Oct 02, 2009 | 2001 BMW 5 Series

1 Answer

Rear Upper Control Arm


Go to Rockauto.com, click on the online catalogue. Select BMW then your year and model. Click on suspension and then control arm. When it shows you the part click on the letter "i" and it will show you a picture of the part. Also not a bad place to purchase parts, I use them all the time.

Jul 13, 2009 | 2004 BMW 5 Series

Not finding what you are looking for?
2003 BMW 7 Series Logo

Related Topics:

2,106 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Frankie B

Level 2 Expert

65 Answers

Fred Sops

Level 2 Expert

272 Answers

Doberman

Level 2 Expert

254 Answers

Are you a BMW Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...