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No No battery draining issue as sat Nav left in the car was fitted from new by the garage before we took delivery of the car. Had the next Sat Nav fitted and no problems. Problems only started at about 92,000 miles
and had sat nav fitted at about 50,000 mlles.
Garage had the car for a week to monitor battery drainage but found it intermittent. Some days battery drained more than others. Tried taking out fuses to see if any caused battery to drain quicker, checked battery/ alternator, new interior lights left on, took cigarette lighter out, in fact everything they could think of. Had faith in garage as had used them from new.
removed sat nav as only thing left to test.
Brand new battery and after fitted still had identical problems. Took car back to garage that fitted battery they tested it & okay. No replacement radio fitted.
We have an "Ampere" that tests the battery amps numbered 1-4.
At the moment we are trying to disconnect the battery every night to see if that helps & we have bought a battery charger.
No, but slightly better. Did not drive on Saturday and on Sunday just ticking over enough to start and did a long motorway drive, disconnected battery and this morning Monday started.
Conclusion being that disconnecting battery helps but still does not solve the problem or tell us what is still draining the battery.