I have a 2011 Bentley GTC super sports and seem to have a failed trickle charger which has now left me with flat batteries. The problem worsens.. I cant get the release handle to work for boot and can’t get passenger door open to release the bonnet to try to jump start there.. where do I go from here as it’s frustrating the hell out of me.

 

Cigarette socket find a charger to fit and wait .

 

Thanks for that. Have tried that also but no luck. Left it overnight but still no
power

 

Cant you stretch across and pull the bonnet release from the drivers side. ?

 

Thanks AJ. No because passenger door needs to be open but deadlocked with no power

 

Youre right, Ive just checked on mine and the damn thing cant be pulled with the passenger door closed.

 

Thanks for double checking as at this rate I’m going mad and could easily been wrong. I’m going to try the cig lighter charger option again. Thanks

 

Stick a voltmeter across them first to establish if they are live and how goosed the battery probably the LHS ( as the starter just turns the starter motor ) .If it’s a trickle C- Tek needs to be a big one or a few days .
Hence the V check to measure every day the rate of charge .
You could get another charger and pump some bigger amps in to speed up the process but risk frying the cig lighter wires = fire .So be careful going down that route .

Risky
Find the fuse rating of the cig lighter say 30;A ( guess btw ) then monetary connect a lower bat charger in this case 25 A ....turn the key to power up open the door ( get someone ready ) switch off and pull the 25 A connection out of the cig socket .
This way you can open the bonnet and find the proper heavy duty charge points .
Remove the LHS ,as you stand looking back air box .Plenty of U tube vids .

 

Just to be clear on your statement,, you say "handle", and you have a convertible correct, so don't you have to use a 10 or a 11 mm socket on a bolt head in the pass through area to pop the boot, or are you trying to used the trapped in trunk emergency electric release handle ?

 

Can you not turn the ignition key anticlockwise to do something? I am sure on our older models it triggers the other battery?

 

Apologies, wrong terminology used. Yes I have tried using the 11 mm socket but the level moves but the boot still doesn't release

 

it’s the “ other battery “ the LHS that’s the OP thinks is below charge to do anything.

The RHS starter just literarily turns the starter motor ....high current draw , and because everything else ( and there’s shed loads of sensitive V stuff ) is potentially sensitive to voltage drops that’s why there’s two batts .
eg ALL the engine ECU,s the fuelling etc are all powered by the now voltage drop free big LHS batt ., doors, catches , seats , entertainment, lights .KESSY + much more ++++ = everything else .

What the cross over function does ( flicking the key to the left ) is the other way ....it feeds charge from the hopefully trickled LHS into the tiny starter flat battery on the RHS in such a way to feed it enough power to turn the starter motor and simultaneously prevent any blow back by a voltage drop .

Motor boats with huge Diesel engines ( as modern electrotwackery wise as the B W12 btw ) have cross over switches .Identical battery installations ...a starter bank ( 24 V huge 24 L engines ) and a domestic bank to power everything else .

The Alternators have a split diode , I guess the Bentley too ?
This means what little 2-5 sec of juice used to spin the engines ( boat or Bentley ) with the starter bank is put back first, then the house / domestic is re- charged .
All the electrotwackery is powered by the house / domestic and alternator when running .

like a boat with the car if the house / domestic is low the ancillaries auto switch off until the House / domestic recover .
eg with the BGT , seats infotainment etc and boat the fridges / chiller shut down if the V drops below a certain amount .
This is to preserve volts / power for the engine ECU ,s i call electrotwackery.

The days of ...think your garden tools .....fuel / carb / spark = pull the cord = start are Loooooooong gone .

 

Hello @Bodie ,
Are you having a second person pushing down on the boot lid to ease in the release of the latch as per the instructions while you are turning the bolt head clockwise?

 

Thanks Johny, No i hadn't but will try that now. the video I picked up on here shown it just releasing but will give it a go. Thanks

 

No luck Bodie ?