SL/R230: Consumer battery
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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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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.
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.
MBworld Guru
Joined: Dec 2009
Posts: 10,782
Likes: 1,011
NO LONGER ACTIVE
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.
