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Battery Replacement and Connection Notes
 
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Pelican Technical Article:

Battery Replacement and Connection Notes

Nick Czerula

Time:

1.5 hours

Tab:

$150

Talent:

***

Tools:

Set of sockets (10mm, 13mm), flathead screwdriver.

Applicable Models:

BMW X5 (2000-06)

Parts Required:

Battery, battery vent hose

Hot Tip:

Wear eye and hand protection.

Performance Gain:

Car will start well.

Complementary Modification:

Replace battery vent hose

When replacing your battery, be sure to use a high quality unit. Replacing the battery can be done in a short amount of time. Read the battery connection notes before disconnecting the battery. Before disconnecting your battery, remove the key from the vehicle and store in a safe place after noting your radio's presets. When the battery is reconnected or loses its charge, the following items may need attention (depending on vehicle equipment). You may have to reset your clock, enter radio presets, initialize power windows, initialize the sunroof and normalize the steering angle sensor.

The battery in BMW E53 X5 models is located in the center of the luggage compartment, below the spare tire (green arrow).
Figure 1

The battery in BMW E53 X5 models is located in the center of the luggage compartment, below the spare tire (green arrow).

Charging battery: 
Charging battery: You can connect a battery charger directly to the battery or under the hood at the positive (+) and negative (-) grounding point junctions.
Figure 2

Charging battery: You can connect a battery charger directly to the battery or under the hood at the positive (+) and negative (-) grounding point junctions. The battery junctions are located at the left front strut tower. The green arrow points to positive and yellow points to negative. However, I suggest removing the battery from the vehicle when charging. This will avoid filling your trunk with gas that the battery emits during charging. Follow the manufacturer's instructions on setting and using the battery charger.

Jump Starting vehicle: 
Jump Starting vehicle: A vehicle with a discharged battery can be jump started using a good battery or a good battery in another vehicle.
Figure 3

Jump Starting vehicle: A vehicle with a discharged battery can be jump started using a good battery or a good battery in another vehicle. When jump starting: Be sure to work in a well ventilated area, batteries can produce an explosive gas. Wear gloves and eye protection and if battery acid comes in contact with your skin, immediately flush with water and seek medical assistance. Move both vehicles close together but do not allow them to touch. Turn the ignition OFF in both vehicles. Connect one end of the positive jumper cable to the positive (+) battery terminal of the vehicle with the good battery. Connect the other end of the positive jumper cable to the positive (+) junction terminal (green arrow) vehicle with the discharged battery. You will have to flip open the lid on the positive (+) junction connection. Connect one end of the negative (-) cable to the negative (-) battery terminal of the vehicle with the good battery. Connect the other end of the negative (-) jumper cable to the negative (-) junction terminal (yellow arrow) of the vehicle with the discharged battery. Start the engine on the vehicle with a good battery. Allow it to idle, then raise the engine speed to 2000 RPM by depressing the throttle. Next, have a friend start the engine of the vehicle with a discharged battery. Once the vehicle with the discharged vehicle starts, shut OFF any electrical accessories, radio, HVAC blower, etc. Carefully disconnect the jumper cables in the reverse order you connected them in. Allow the vehicle with the dead battery to idle to recharge the battery.

Replacing battery:
Replacing battery: Working in the trunk, lift the lower carpet panel and suspend it using the supplied tether and hook (green arrow).
Figure 4

Replacing battery: Working in the trunk, lift the lower carpet panel and suspend it using the supplied tether and hook (green arrow).

Replacing battery: Remove the spare tire center mounting stud.
Figure 5

Replacing battery: Remove the spare tire center mounting stud. Unscrew the wing nut, remove the metal retainer, then unscrew and remove the entire stud (green arrow). This makes getting the spare tire out easier as the tire doesn't hang up on the stud. Remove the spare tire from the vehicle.

Replacing battery: Remove the three 13mm metal support bracket fasteners (green arrows).
Figure 6

Replacing battery: Remove the three 13mm metal support bracket fasteners (green arrows).

Replacing battery: Then lift the support bracket (green arrow) up and lay it aside, as shown.
Figure 7

Replacing battery: Then lift the support bracket (green arrow) up and lay it aside, as shown. You now have access to the vehicle battery (yellow arrow).

Replacing battery: Working at the left side of the battery, pull the battery vent hose straight out to remove it.
Figure 8

Replacing battery: Working at the left side of the battery, pull the battery vent hose straight out to remove it.

Replacing battery: Using a ratchet and a 10mm socket, disconnect the negative (-) battery cable (green arrow).
Figure 9

Replacing battery: Using a ratchet and a 10mm socket, disconnect the negative (-) battery cable (green arrow). Move the negative (-) cable aside and cover so it does not accidentally come in contact with the battery terminal. Using a 10mm socket, loosen and remove the battery hold down (yellow arrow).

Replacing battery: Release the locking clip and open the battery safety terminal cover.
Figure 10

Replacing battery: Release the locking clip and open the battery safety terminal cover. The photo shows the lid open. There is one plastic lock you have to release by pulling up. Then using a ratchet and a 10mm socket, loosen the positive (+) battery cable (green arrow). Lift the positive (+) battery cable off the battery and lay it aside.

Replacing battery: Lift the battery up and remove it from the spare tire wheel well.
Figure 11

Replacing battery: Lift the battery up and remove it from the spare tire wheel well. Be careful and make sure you have a good grip, the battery is quite heavy. You will have to move cables around and keep them out of the way as you remove the battery from the vehicle. Clean the battery compartment thoroughly. Clean any corrosion from the battery cable ends if present.

Replacing battery: Before installing a new battery, check that the battery vent line (green arrow) is not pinched, is in good condition and properly routed.
Figure 12

Replacing battery: Before installing a new battery, check that the battery vent line (green arrow) is not pinched, is in good condition and properly routed. Replace it if needed. Install the battery in the well, attach the vent line. Connect the positive (+) cable. Next connect the negative (-) cable. Install the battery hold down bracket. Then reassemble the metal support bracket and trunk carpet.

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Comments and Suggestions:
Taylor Built Comments: I have an e53 with LPG fitted and the donut tank covers the battery. I needed to disconnect the vehicle power before fitting a replacement LCM and when disconnecting the black earth lead from the body in the boot It sparked. where would you advise me to look for the short that caused that.
August 26, 2016
  Followup from the Pelican Staff: I have no experience with LPG BMW conversions. I would suggest getting a wiring diagram and tracing the short using fuses and the wiring. - Nick at Pelican Parts  
JP Comments: Hello. Thank you for this information. It is very useful. Do you know where I could purchase or find a T bolt screw that holds the nut in figure 10? The current screw / T bolt is broken. It seems during previous battery change in my x5 2004, the installer tighten that screw too much.
January 12, 2016
  Followup from the Pelican Staff: Pelican parts! Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
Tho Comments: Thank you Nick for your quick reply.
January 5, 2016
  Followup from the Pelican Staff: No problem. - Nick at Pelican Parts  
Tho Comments: Do I need to register the new battery for 2005 X5 and 2011 328xi?
January 4, 2016
  Followup from the Pelican Staff: The 3-Series yes, the X5 no. - Nick at Pelican Parts  
utsc Comments: On average how long does a BMW Dealer installed E53 X5 Battery last. My dealer installed battery will be 7 years old next month and I am having starting problems. I work close by so I don't drive long distances often. Battery Test performed by CAA AAA says that the battery is good.

I am not in a position to pull fuses and check each circuit but can is there any basic checks that I can do to rules out any issues. As you know BMW dealers charge $150 / hours for diagnostics and can take a couple of hours. Also some dealers diagnose by elimination when the cause is not easily identifiable so they make the customer to replace suspicious components and keep trying and the bill can go up to couple of thousands of dollars.

*************************

Before spending a lots of money trying to diagnose any issues should first replace the battery as it is 7 years old?
August 31, 2015
  Followup from the Pelican Staff: I would say anything over 5 years is pushing it.


You may have a parasitic draw. You'll want to monitor the draw on the battery when the vehicle is asleep. Here is a list of the specifications: http://autotechdiagnostics.com /?p=185
Once you confirm there is a draw. You will have to isolate the circuit with the draw. Then determine which components on that circuit is causing the draw You can isolate by removing fuses. be sure to have all the latches on the doors and hood closed (pin switches) so the vehicle will sleep during testing. If it wakes up, you will have to wait until it goes to sleep again.
- Nick at Pelican Parts
 
Bob Comments: I Have a 2002 X5 4.4i. The battery drains when parked for an 8 Hr duration. I had to re-charge battery for 15 mins and the vehicle restarted. The battery is about 8Y old. Will the battery replacement help? Does it need any computer software re-programming after replacement?
March 25, 2015
  Followup from the Pelican Staff: You may have a parasitic draw. You'll want to monitor the draw on the battery when the vehicle is asleep. Here is a list of the specifications: http://autotechdiagnostics.com /?p=185
Once you confirm there is a draw. You will have to isolate the circuit with the draw. Then determine which components on that circuit is causing the draw You can isolate by removing fuses. be sure to have all the latches on the doors and hood closed (pin switches) so the vehicle will sleep during testing. If it wakes up, you will have to wait until it goes to sleep again.
- Nick at Pelican Parts
 
Rob Comments: Hi I've reading info that indicates when replacing a battery in an X5, the dealer needs to reset something in the vehicle's computer software, one piece indicated that this is not the case for 2006 X5 - could you confirm?
February 14, 2015
  Followup from the Pelican Staff: 2006 is still and E53, which does not require battery replacement programming. - Nick at Pelican Parts  
04BMWX5 Comments: Thank you so much for posting this information!Extremely helpful. Completed the task in roughly an hour in my driveway. Everything works as it should. BTW... got 10 years out of the OEM BMW battery in a cool Canadian climate.
December 31, 2014
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
 
BMWRLSX5 Comments: Thanks Nick for the quick reply. I'll give your answer a go as soon as I do the battery. I'm up in years and hope I don't forget. As long as I'm waiting for the voltage to dissipate I probably should make sure all blowers and fans are turned off as well. That dang stability unit sure cost a small fortune now doesn't it? I've heard that any e36 unit would work for a replacement. I'm thinking used. I also think BMW changed suppliers for that DSC pump in 2001. thanks again, Randy
June 5, 2014
  Followup from the Pelican Staff: Thanks for the follow up. We appreciate it.
- Nick at Pelican Parts
 
BMWRLSX5 Comments: I have a 2004 X5 4.4 and an 2001 Z3 3.0. Both of these vehicles had a huge spark when reconnecting a replaced battery. The Z3's sparking is the reason I fried the DSC controller. Not positive about the DSC problem, but lost it exactly after the sparking incident with Z3. Hoe can I prevent the arc welder type spark during a battery install? I know there is going to be a reconnect spark, but I'm getting a spark equivalent to shorting a connected battery to it's own terminals. Help if you can......Randy
June 5, 2014
  Followup from the Pelican Staff: I would allow the vehicle to go to sleep before replacing the battery. Open trunk, then wait about 15 minutes. There will always be a small spark. Any greater and I would think the battery was connected backward. - Nick at Pelican Parts  

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