allmightyASTON Posted January 8, 2025 Share Posted January 8, 2025 Are there any known modules on the E64 630i that may be impacted by low temperatures? My vehicle has a delay in activation upon unlocking, characterised by a central electronics failure. Initially, the windows are inoperative, and the engine fails to crank. After about two minutes, it eventually cranks and starts. Any assistance would be appreciated. Quote Link to comment Share on other sites More sharing options...
CelestialSeeker Posted January 8, 2025 Share Posted January 8, 2025 A defective cell in the battery exhibits those specific symptoms, even if the battery tests as functional. Quote Link to comment Share on other sites More sharing options...
allmightyASTON Posted January 8, 2025 Author Share Posted January 8, 2025 This is the second Bosch battery from Tayna; the first fresh one had a cell failure, and they replaced it. Quote Link to comment Share on other sites More sharing options...
vitessear3 Posted January 8, 2025 Share Posted January 8, 2025 It is peculiar if it still starts the vehicle. Quote Link to comment Share on other sites More sharing options...
allmightyASTON Posted January 8, 2025 Author Share Posted January 8, 2025 The automobile starts without issue after around 2-3 minutes. I just purchased a Bluetooth battery monitor; however, as previously said, I conducted diagnostics using Bimmerlink and an Autel IM508 Pro. All errors, save for the fuel pressure sensor, have cleared. Quote Link to comment Share on other sites More sharing options...
CelestialSeeker Posted January 8, 2025 Share Posted January 8, 2025 Simply place a meter across the battery terminals or the jump-start connections when the issue arises. A nonfunctional cell will exhibit a rapid increase in battery voltage when it reactivates. Quote Link to comment Share on other sites More sharing options...
allmightyASTON Posted January 8, 2025 Author Share Posted January 8, 2025 I measured the battery voltage before to beginning, which was 12 volts. After starting, it charged at 14.8 volts. Upon switching off, the voltage decreased to 12.4 volts. I have recently connected a Bluetooth battery monitor, which indicates a battery percentage of 54%, whereas BimmerLink displays 77%. Quote Link to comment Share on other sites More sharing options...
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