Ticking noise from under the bonnet when parked and locked.

[edwardmk]

This was my last desperate attempt to get into the car. I put acoustic foam over the hood weighted against the wind to dampen the noise from the BBUS. Then connected the V8 battery to pin 9 with the CTEK in parallel. BBUS fired up at around 2v. I monitored current and voltage continuously.
Took about 15 mins to register 7v on the ZT-T with the donor battery and charger disconnected so I was sure the battery was charging via pin 9 and there was no relay in the way. The BBUS was still going off even louder. Tried the key fob but still no joy. Bit frustrated I went in to grab a coffee. 15 mins later I came out and noticed the BBUS had gone silent. Voltage was oscillating between 10.5 to 13v .Current was pulsing between 2 and 4.6 amps. Voltage was now 11.2 on ZT-T with donor battery and charger disconnected. Tried the fob again but no joy. Put key in driver door and turned it to unlock as per Rick's advice. Heard the solenoid in the rear passenger door activate weakly. Went back inside for fifteen mins approx while charging continued. Then re-tried the key fob in the driver door at unlock position and pressed it several times. The rear doors popped open but not the front doors. Jon’s tip did work (eventually) after all lol . I think the front solenoids might fire up as the battery charges further and will report later on. Thanks for all the advice. Hood, sorry Simon, bonnet is now open. Hip, hip Yay! Over the moon it worked.


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