Any advice before replacing battery - 2006 CLK 500 Convertible
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2006 CLK 500
Any advice before replacing battery - 2006 CLK 500 Convertible
I need to change the battery in my 2006 CLK 500 convertible (W209 I believe). I thought I read a post a few months ago about it not being as simple as disconnect old and reconnect new. Are there pitfalls I need to worry about? I plan on disconnecting the old battery and having it tested before buying a new one so the car may be without a battery for 45 min to an hour. TIA
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NO LONGER ACTIVE
I like the Advance Auto Platinum battery - It's an AGM with a 3 year full replacement warranty. There are no issues disconnecting the battery. You may need to re-normalization the power windows and the ESP steering angle sensor. Instructions are actually in your owner's manual. For the windows, you raise them and then hold the switch up for an extra 5 seconds. For the steering angle sensor, if you get the "ESP Unavailable" message, then start the engine and while sitting in park, turn the steering wheel fully lock to lock several times.
Oh, and do b careful not to "stutter" the negative terminal when you disconnect and reconnect it. You will get a small spark, but it's not dangerous. If you "stutter" it and create a spray of sparks, you can damage the electronics in the car.
Oh, and do b careful not to "stutter" the negative terminal when you disconnect and reconnect it. You will get a small spark, but it's not dangerous. If you "stutter" it and create a spray of sparks, you can damage the electronics in the car.
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Joined: Jul 2016
Posts: 478
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From: California
2023 E450 AT, 1996 S420, (sold) 2004 CLK320 Convertible (v8, 6 speed)
If you're from California (could be relevant for some other states) you'll have to complete Drive Cycle before going to Smog Check.
Thread Starter
Junior Member
Joined: Dec 2014
Posts: 25
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2006 CLK 500
I like the Advance Auto Platinum battery - It's an AGM with a 3 year full replacement warranty. There are no issues disconnecting the battery. You may need to re-normalization the power windows and the ESP steering angle sensor. Instructions are actually in your owner's manual. For the windows, you raise them and then hold the switch up for an extra 5 seconds. For the steering angle sensor, if you get the "ESP Unavailable" message, then start the engine and while sitting in park, turn the steering wheel fully lock to lock several times.
Oh, and do b careful not to "stutter" the negative terminal when you disconnect and reconnect it. You will get a small spark, but it's not dangerous. If you "stutter" it and create a spray of sparks, you can damage the electronics in the car.
Oh, and do b careful not to "stutter" the negative terminal when you disconnect and reconnect it. You will get a small spark, but it's not dangerous. If you "stutter" it and create a spray of sparks, you can damage the electronics in the car.
Member
Joined: Mar 2013
Posts: 155
Likes: 7
2005 320CLK Cab
When I pulled my battery out, the base plate was filled with Norway spruce needles from a local tree. It took a bit to clean them out. Also, clean the drain pipe and make sure to feed the battery overflow into the proper holes (unless agm batts dont have them)
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When I pulled out my battery, I found the drain hose routed under it, which umped any acid burped out onto the tray. After neutralizing and cleaning the mess, I properly routed the hose. here are some photos of how it should look:
Looking from the top, the green arrow shows the drain from the windshield water collector, the yellow is the battery drain, and the blue is the water drain for the tray:
And from underneath (remove the fender shroud to see):
Looking from the top, the green arrow shows the drain from the windshield water collector, the yellow is the battery drain, and the blue is the water drain for the tray:
And from underneath (remove the fender shroud to see):
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Senior Member
Joined: Feb 2015
Posts: 434
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From: Midlands, UK
CLK W209
Ahhh I did wonder where it went Rodney. I couldn't see that little hole for that pipe so put a slit in the water drain pipe and just fed it through there instead, glad to know it provides the same result.
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Joined: Apr 2004
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From: PA
E Coupe C207, ML W166, ML W164, Sprinter 1500/144, W111 SB220 Fintail(s), A5 chassis Beetle 5+5
It's a tight fit and the unit is pretty heavy. I'm pretty experienced and not exactly a small guy, but it was tough, an 11/10 as far as batteries go.
Senior Member
Joined: Feb 2015
Posts: 434
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From: Midlands, UK
CLK W209
Agreed it's quite a pita. You can make it a little easier by lifting the bonnet into its vertical service position, if you weren't aware.
