SL/R230: Trunk locked 2003 sl500
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Junior Member
Joined: Jun 2016
Posts: 24
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2003 SL500
Trunk locked 2003 sl500
My trunk is locked I don’t have a key for it since it’s a second hand trunk lock as my old lock was not functioning properly when I bought it it didn’t have a key but it was way better until now.
I have ABSOLUTELY NO POWER coming in to the car my starter battery is brand new but the consumer battery is about three years old does anyone know how to open the trunk on this car. ?or can a locksmith perhaps open the trunk thereby access to the consumer battery ?Is there a way to replicate a key for it or what do you guys think
this is one unlucky situation I appreciate your help.
I have ABSOLUTELY NO POWER coming in to the car my starter battery is brand new but the consumer battery is about three years old does anyone know how to open the trunk on this car. ?or can a locksmith perhaps open the trunk thereby access to the consumer battery ?Is there a way to replicate a key for it or what do you guys think
this is one unlucky situation I appreciate your help.
Senior Member
Joined: May 2020
Posts: 454
Likes: 55
From: North Carolina, USA
2004 SL500AMG, 2003 SL500 USA
There is a trunk unlock button that looks like a half moon over a full moon close to the windows switches on the driver door. I have a vague memory of inputting power through the cigarette lighter hole. I think there may have been a charger or battery maintainer that works through. the lighter socket. Ask your AI like chatgpt.
MBWorld Fanatic!
Joined: Aug 2020
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From: Gretna, NE
'03 SL55 Black, '03 SL500's Aegean, Mars Red, Tazanite, Alabaster, '11 S550 Flint Gray
Personally, I would have a locksmith pick/decode and then cut a key. (Actually I have the pick, so I would do it myself).⁸⁹ You want an emergency key in case the PSE pump fails The alternator output goes directly to the rear battery, so you should be able to connect a charger there and open it electrically if it is just a dead battery.
Thread Starter
Junior Member
Joined: Jun 2016
Posts: 24
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2003 SL500
Personally, I would have a locksmith pick/decode and then cut a key. (Actually I have the pick, so I would do it myself).⁸⁹ You want an emergency key in case the PSE pump fails The alternator output goes directly to the rear battery, so you should be able to connect a charger there and open it electrically if it is just a dead battery.
the output though ? You’re taking about is it a bolt ?
Basically find the alternator connect a positive to it ? Then you’d hit it with a screw driver or a pry bar ?
Super Member
Joined: Sep 2021
Posts: 539
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From: Ann Arbor, MI
2004 SL600
The suggestion is to connect a battery jump pack to the alternator large + wire and a chassis ground. Everything should then work - you should be able to start the car, open the trunk etc.
Actually have you simply tried starting the car? When the starter battery is good and the BCM and related parts are working correctly, the starter battery can power the entire car to perform an "emergency" start of the car.
Thread Starter
Junior Member
Joined: Jun 2016
Posts: 24
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2003 SL500
Sorry don't understand the 1st or 3rd questions.
The suggestion is to connect a battery jump pack to the alternator large + wire and a chassis ground. Everything should then work - you should be able to start the car, open the trunk etc.
Actually have you simply tried starting the car? When the starter battery is good and the BCM and related parts are working correctly, the starter battery can power the entire car to perform an "emergency" start of the car.
The suggestion is to connect a battery jump pack to the alternator large + wire and a chassis ground. Everything should then work - you should be able to start the car, open the trunk etc.
Actually have you simply tried starting the car? When the starter battery is good and the BCM and related parts are working correctly, the starter battery can power the entire car to perform an "emergency" start of the car.
Last edited by exeunte anno; Yesterday at 09:04 PM.
