Continental GT battery replacement

[bertie]

Helping a friend sort his 2011 Conti GTC...

He wants to replace both batteries but looking up via reg number I get loads of different answers as to whay type (or types) they are.

The most popular answers seem to be 027 and 096 but does anyone know?

Also can you just swap or do then need registering with the car using the service tool like BMW do?

Many thanks

[robseagul]

Good evening.
There are a few options And the best bet
To be sure is too pop the boot covers and take a peek.
I don’t think they need registration but having a gt a think you are going to get a few light up after the change so you might want access to a reader.
R

[nrick]

I am doing the same thing this week end

I think AGM is best for the service battery, lead acid for the starter.

There is a procedure on another forum which I will get for you but in essence

Starter (Smaller battery on right as you look in the boot) negative first Do not let the terminals touch the body until both batteries are disconnected.
Then Main battery ( Larger battery on the left)

If you do this then no warning lights should be on.

Make sure windows are up, keys are out and wheels pointing straight ahead from memory but will check

N

[nrick]

Stolen from another thread

Looking at the boot (trunk) the the battery on the right is a standard acid battery [starts the car] The battery on the left is a AMG battery for everything else on the car.

Replacing the right starter battery there is not special procedure to follow except negative off first then the positive, but make sure the terminals do NOT touch the body or any other component as the left side battery is still connected to the vehicle & is live. Make sure you isolate each clamp safely.

The acid battery can be charged with a normal 12v charger if need be, but most guys have 2 CTeck chargers & hook each battery without disconnecting the terminals.

The right side battery how ever is a little different before you disconnect if you need to replace then follow this ...

Disconnecting and connecting batteries:-

Procedure for disconnecting batteries, this procedure must be strictly followed
1. Switch off ignition and all electrical consumers and remove ignition key.
2. Wait 60 seconds - Disconnect starter battery in luggage compartment on right [see below].
3. Disconnect main system battery in luggage compartment on left [see below]

Caution:-
If the sequence is not followed, the pyrotechnical battery isolator may be triggered and the electrical equipment in the vehicle
damaged.
The battery isolation igniter for Continental GT and Continental Flying Spur is shown on the left hand side, and for Continental GTC on
the right.
091501w0060
_______
Disconnecting starter battery in luggage compartment on right
Warning:-
To increase crash safety, the starter battery in the luggage compartment on the right is equipped with a battery isolator. In an
accident, the air bag control module triggers a charge disconnecting the voltage supply wire to the starter.
Battery isolation is performed pyrotechnically, with a very small explosive charge. To avoid accidentally triggering the charge when
working on the battery or the battery isolator, you must always disconnect the battery earth on the negative terminal of the starter
battery first.
Remove right hand luggage compartment carpet panel. [refer to bin: 0867]
Continental GT and Continental Flying Spur
Disconnect battery clamp [1] from battery negative terminal post.
Disconnect battery clamp [2] from battery positive terminal post.
091501w0005
Continental GTC
Disconnect the negative terminal [1] off the starter battery.

Warning:-
On Continental GTC cars a separate positive cable [3] from the starter battery to the starter battery fusebox is fitted. This cable
remains live when disconnected from the starter battery until the main battery is also disconnected. When disconnected take care not
to cause a short circuit or allow the cable to come in contact with the air bag connector [7]
Remove the fixing [2] and disconnect the red starter battery fusebox cable [3] from the battery near to the positive terminal.
Lift up the plastic cover [4] to access the positive battery terminal, and loosen the clamping nut.
Lift off the battery isolation igniter [5] and attached starter cable [6]
091501w0057
________

Disconnecting main system battery in luggage compartment on left
Disconnect starter battery in luggage compartment on right [see above]
Remove left hand luggage compartment carpet panel. [refer to bin: 0867]
Disconnect battery earth lead [1] at battery negative terminal.
Disconnect the battery positive cable [2] at battery positive terminal.
Remove main system fusebox. [refer to bin: 0937]
091501w0006
________

Connecting batteries
This procedure must be strictly followed.
1. Connect main system battery in luggage compartment on left.
2. Connect starter battery in luggage compartment on right.

Caution:-
If the sequence is not followed, the pyrotechnical battery isolator may be triggered and the electrical equipment in the vehicle
damaged. The procedure for connecting batteries must be strictly followed.
________________________________________________ _______

Connecting main system battery in luggage compartment on left
This procedure must be strictly followed
1. Switch off ignition and all electrical consumers and remove ignition key.
2. Fit positive terminal clamp onto battery positive terminal.
3. Only after securing positive terminal clamp, fit negative terminal clamp to negative terminal on battery.

Warning:-
On Continental GTC cars, the positive cable from the starter battery to the starter battery fusebox will be live once the main systems
battery is connected.

Installation:-
Tighten battery positive terminal clamp securing bolt.
Tighten securing bolt of battery negative terminal. [refer to table: Torq_091501_by614_01]

Caution:
Battery terminal clamps must only be fitted by hand without force, this prevents damage to battery housing.
[Do not use mallet or hammer]

Battery terminals must not be greased.
___________________________

Connecting starter battery in luggage compartment on right
1. First switch off ignition and all electrical consumers and remove ignition key.
2. Connect battery in luggage compartment on left. [refer to bin: 0915]
3. Fit positive terminal clamp onto battery positive terminal and the cable to the starter battery fusebox on Continental GTC cars.
4. Only after securing positive terminal clamp, fit negative terminal clamp to negative terminal on battery.

Installation:-
Tighten battery positive terminal clamp securing bolt.
Tighten battery negative terminal clamp securing bolt. [refer to table: Torq_091501_by614_01]

Caution:-
Battery terminal clamps must only be fitted by hand without force, this prevents damage to battery housing.
Battery terminals must not be greased.
___________________________

Steps after connecting batteries:-

1. Switch Ignition on and off again with ignition key - Read fault memory.
2. Perform Guided functions/Component replacement using VAS 5052. Read, interrogate and clear fault codes. [refer to bin: 0909]
3. Initialise Electric windows. Refer to side glass - To initialise. [refer to bin: 0845]
4. Initialise sunroof (if fitted). [refer to bin: 0877]
5a.(2 door cars) Initialise front seats. [refer to bin: 0881]
5b.(4 door cars) Check seat memories have been retained. Reinitialise individual seats as necessary.

Front seats [refer to bin: 0881]
Rear seats [refer to bin: 0885]
6. Perform zero calibration on steering angle sensor using [VAS 5052], Refer to Diagnostic system - Guided functions. [refer to bin:0909]
7. Check all electrical consumers are functioning correctly.

[bertie]

Thanks for the info guys, in the end he took it into a local specialist who swapped them both for him.

Car is all good now and ready for some sunshine!

Cheers

[MKBentley]

Thank you for the guidance given here, it saved the day, I replaced the main system battery in the way prescribed, I cant thank you enough