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Found 2 results

  1. Now this is odd. I bought a BM54 from eBay. Works 100% OK, except it flattens my battery overnight, so lets say 10 hours. I think I've checked common issues etc, but am somewhat bamboozled. Here's what I know/have checked: Current through fuse F69 is zero, 15 seconds after key off. I haven't monitored it beyond that. Car does appear to be going into sleep mode, 16 minutes after locking car, as I can see gear selector light go off. Only my BM54 does this. I have 4 other radios, none have this issue, even after a week. Disconnecting the BM54 connector prevents this issue. Alternator works great, voltage at battery when running is approx 14.2V, battery charges up again no problems. Nothing else to suggest any electrical problems with car. I see repairers offering BM54 repair service that include for flattening battery issue - don't have any further details. Anyone got any ideas? Must be a good handful of amps to flatten battery overnight, so all I can think of is something 'waking up' periodically, but only when that radio is connected. Considering using the switched 12V to supply the radio too, to see if that makes any difference.
  2. Given the features that the BM54 backwards-compatible round-pins version lacks, is it really any different to a BM24? (Apart from antenna connect differences)
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