SL55 AMG, SL63 AMG, SL65 AMG (R230) 2002 - 2011 (2003 US for SL55 and 2004 for the SL65)

SL55/63/65/R230 AMG: SL55 low battery alerts

Old Jan 2, 2023 | 09:18 PM
  #1  
markmand's Avatar
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AMG SL55
SL55 low battery alerts

Just bought a new SL55
I keep getting alerts from the app that the battery is critically low
Car starts and runs normally with no dash warning lights
Trickle charger doesn't completely top off
Anyone else with this issue?
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Old Jan 3, 2023 | 08:56 AM
  #2  
mbwillgrubs's Avatar
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2013 CL 63, 2002 E 55, 04 Jaguar XJ8, 66 Jaguar XKE
What year SL? Don't these have two batteries? The warning may be referring to the auxiliary battery.
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Old Jan 3, 2023 | 02:08 PM
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95 SL600
Either replace both batteries or take it to a shop. These cars don’t like bad batteries, bad and expensive things will happen if the batteries are not in good shape. Make sure to disconnect the rear battery first and starter battery last, and reconnect in reverse order.
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Old Jan 4, 2023 | 03:11 PM
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'94 SL600,'05 SL600,'06 S65,'07 E63,'14 E63S,'09SL600 all sold, ‘15 S65,‘18 E63S,'17 SL65, '17S65Cab
If the warnings are coming from an App it is a new R232 SL55. This is posted in the wrong forum.
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Old Jan 9, 2023 | 10:06 AM
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95 SL600
Didn’t catch that app thing.
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Old Apr 1, 2023 | 06:43 PM
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2004 SL55
So 20 years later and the new SL's have low voltage issues? Oh what memories! lol
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Old Aug 30, 2023 | 02:19 PM
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AMG 55 SL
Lightbulb battery warning lights coming on after long runs

Originally Posted by markmand
Just bought a new SL55
I keep getting alerts from the app that the battery is critically low
Car starts and runs normally with no dash warning lights
Trickle charger doesn't completely top off
Anyone else with this issue?
I too have a new 55SL, i am getting the same problem, i recently drove around 250 miles and the next morning i was getting emails and dash warning that my battery was critically low. Dealer trying to fob me off saying i should put it on a trickle charger, i've had countless new cars and never needed to charge battery.
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