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

SL/R230: Keyless go not working :(

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Old 04-03-2013, 05:21 PM
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SL 500 R230 53
Keyless go not working :(

Hi,
I've asked on benzworld but no one seems to have an answer.

Basically my keyless go has completely stopped working. I no longer even get the message saying 'key not recognised'. Nothing shows on the dash at all.

I replaced the 6.5A fuse as this had blown, and then the car made a few beeps but the keyless go is still acting as if it doesn't even exist .

The fuse has not blown again as I have checked.

Can anyone suggest what has happened?



I am also trying to get to the keyless module in the boot to look for any obvious water damage, but I can't get the carpet off that covers it, does anyone have a tutorial for this?

Many thanks
Elliot
Old 04-07-2013, 05:10 PM
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jsw
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2004 SL 600
i assume you have replaced the battery in the key?
Old 04-10-2013, 05:27 PM
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SL 500 R230 53
The battery has been changed but it's nothing to do with the battery

Normally when the key battery is low the dash would say 'key not recognised'

But since the fuse blew the dashboard won't even show this message now
Old 04-11-2013, 10:58 AM
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Originally Posted by n1ksx
The battery has been changed but it's nothing to do with the battery

Normally when the key battery is low the dash would say 'key not recognised'

But since the fuse blew the dashboard won't even show this message now
Doesnt the battery charge when inserted into the ignition? Or does the battery need replacing??
Old 04-11-2013, 12:21 PM
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AMG GTC Roadster, E63s Ed.1, M8 Comp. Coupe
Originally Posted by mark_hk
Doesnt the battery charge when inserted into the ignition? Or does the battery need replacing??
The keyfob battery is a simple lithium battery. Not rechargeable...
Old 04-11-2013, 12:24 PM
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AMG GTC Roadster, E63s Ed.1, M8 Comp. Coupe
Originally Posted by n1ksx
Hi,
I've asked on benzworld but no one seems to have an answer.

Basically my keyless go has completely stopped working. I no longer even get the message saying 'key not recognised'. Nothing shows on the dash at all.

I replaced the 6.5A fuse as this had blown, and then the car made a few beeps but the keyless go is still acting as if it doesn't even exist .

The fuse has not blown again as I have checked.

Can anyone suggest what has happened?



I am also trying to get to the keyless module in the boot to look for any obvious water damage, but I can't get the carpet off that covers it, does anyone have a tutorial for this?

Many thanks
Elliot
A blown fuse could indeed be an indicator of something more significant, but you may try to reset the electronics by disconnecting the battery in the trunk.

When reconnecting you will have to reset the ESP and windows, but that helped me clear out an shifter issue at one point in time.

Other than that, visit a dealer or find someone with a StarTek diagnostics setup to check for faults...
Old 04-12-2013, 05:15 PM
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SL 500 R230 53
I had it checked with STAR but no faults showed really, they said they'd need it longer to do more tests but I didn't want a huge bill

Had all fault codes reset and also done the battery reset job

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