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SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

Consumer battery

 
Old 12-07-2018, 04:33 PM
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2004 Mercedes-Benz SL500
Consumer battery

2004 Mercedes-Benz SL 500 consumer battery in the trunk. I need to replace the consumer battery in the trunk, do I need to keep 12 V to the system via the battery cables while I replace the old battery.
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Old 12-07-2018, 09:51 PM
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CURRENT: 2011 SL550, 2010 ML350, FORMER: 2007 CLK550 Cabriolet, 2002 C240, 2001 ML320, 1984 300TD
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NO! Do NOT try to keep voltage on the system when changing the battery. There are only three things that are sometimes "lost" when the battery is disconnected - the radio sound settings (bass/treble, but not presets), the auto-up window function, and the steering angle sensor calibration. There are instruction in the owner's manual for resetting the windows and steering angle sensor.
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Old 04-27-2019, 06:52 PM
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2005 SL 500
Can you post the procedure for re-calibrating the window function, and the steering angle sensor? I don't have a copy of the owner's manual.
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Old 04-27-2019, 09:13 PM
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To reset the windows, lower them halfway, then raise them fully, and continue to hold the switch up for an extra 5 seconds. To recalibrate the steering angle sensor, start the engine and then turn the steering wheel fully lock to lock a few times until the "ESP Unavailable" message clears.
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