Can I Change the Battery by Myself?
Thread Starter
Senior Member
Joined: Feb 2011
Posts: 465
Likes: 16
C204
Can I Change the Battery by Myself?
Can I change the battery by myself or I need to visit a workshop? The owner's manual says "visit a workshop"... are there any risks?
Also, where is the location of the car battery? I see one small battery in the trunk but it is too small to be the main one.
Also, where is the location of the car battery? I see one small battery in the trunk but it is too small to be the main one.
MBWorld Fanatic!
Joined: Aug 2005
Posts: 1,306
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From: Sarasota, Florida
2023 E450 Cabriolet, 2019 F150 Platinum, 2014 Dodge Challenger R/T
I don't see why not...
I had pasted a link that said C class but I don't think think it was
Will see if can find something...
I had pasted a link that said C class but I don't think think it was
Will see if can find something...
Last edited by mrmotoguzzi00; Jun 16, 2017 at 03:32 PM.
Thread Starter
Senior Member
Joined: Feb 2011
Posts: 465
Likes: 16
C204
Seems a bit tough business considering my skills 
This is W203... is the location of the battery the same in W204?
I've heard that the car must not be left without electricity because it may damage the system. That's why I was wondering if it is safe to remove the battery.
This is W203... is the location of the battery the same in W204?
I've heard that the car must not be left without electricity because it may damage the system. That's why I was wondering if it is safe to remove the battery.
MBWorld Fanatic!
Joined: Aug 2005
Posts: 1,306
Likes: 204
From: Sarasota, Florida
2023 E450 Cabriolet, 2019 F150 Platinum, 2014 Dodge Challenger R/T
did a quick search here on mbworld... wow what a mess... i guess the simple battery swaps are a thing of the past ? at least on your model...
here is the link i found...
https://mbworld.org/forums/c-class-w...g-battery.html
here is the link i found...
https://mbworld.org/forums/c-class-w...g-battery.html
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MBWorld Fanatic!
Joined: Mar 2008
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From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
MB W203 have a very fragile electrical system. Respectfully, with your lack of experience in this field , I strongly suggest you visit a technician who knows MB.
Thread Starter
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Joined: Feb 2011
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C204
Member
Joined: May 2017
Posts: 175
Likes: 24
From: SoCal
2020 Mercedes E450 Wagon
I found it very easy to swap the battery. On my sister's 2009 C300, we had to change the battery because it wouldn't start after sitting for a few hours. This would've been a problem when we were trying to sell the car later that week. So I bought a used battery and swapped it out in 15 mins. No isssues with any electronics. Just follow the vid and you should be fine.
Of course you can pay the dealer several hundred dollars to do it for you if you're really worried.
Of course you can pay the dealer several hundred dollars to do it for you if you're really worried.
Super Member
Joined: Mar 2011
Posts: 803
Likes: 37
From: Bay Area, CA
2011 C300 Sport, P1, MM, Wood, Heated FS, DIY rearview camera.
I changed the battery myself a year ago, piece of cake thing.
I have never heard of any electronics system to be possibly damaged without power. In general it is the other way around.
I have never heard of any electronics system to be possibly damaged without power. In general it is the other way around.
Super Member
Joined: Oct 2014
Posts: 517
Likes: 22
From: California
Mercedes C250 Coupe
I found it very easy to swap the battery. I bought a used battery and swapped it out in 15 mins. No isssues with any electronics. Just follow the vid and you should be fine.
Of course you can pay the dealer several hundred dollars to do it for you if you're really worried.
Of course you can pay the dealer several hundred dollars to do it for you if you're really worried.
ez
Newbie
Joined: Apr 2017
Posts: 4
Likes: 3
From: Pittsburgh PA
2012 C300 Luxury 4Matic
New owner (since March) of a 2012 C300 here. First post.
Boy, glad I didn't read this forum when my battery died last week on a Sunday. Found a good deal on a Bosch AGM at Pep Boys and changed it in the parking lot of the store. No fancy precautions and zero problems after.
Don't overthink this one.
Boy, glad I didn't read this forum when my battery died last week on a Sunday. Found a good deal on a Bosch AGM at Pep Boys and changed it in the parking lot of the store. No fancy precautions and zero problems after.
Don't overthink this one.
Last edited by TheDurk; Jul 8, 2017 at 02:59 PM.
Super Member
Joined: Nov 2008
Posts: 604
Likes: 29
From: SA
2008 C350-Sport-AMG-Active Agility Pack(Not reliable) +Izuzu KB6 3L(It seems Reliable)+Mazda
Had my battery replaced, the simple way.
My battery went weak, the car refuse to start, I new its the battery as it was 8 years old and was coming for some time.
I went to a local cluedup electrical car shop, hes cluedup and work on all modern stuff including modern farm tractors etc, as well as Mercs, including W204.
I read about all the double power supplies in parralel etc.
The manual of my W204 explains the simply way.
He says no double connections. After he and one of his techs convinced me,... I 1-had the wrong battery issued by factory in the car(Aperage on these cars must be more), and 2) he guarantee the simple method will work as the manual said.
He ordered the expensive battery, and on arrival they came out to my home.
1-Brought new battery.
2-Unlock car, open bonnet, pull out keys.
3-Took off battery cover.
4-Disconnect Earth.
5-Disconnect Power lead.
6-Remove old battery, insert new battery.
7-Connect power lead.
8-Connect Earth lead.
10-Alarm went off, i sweat one drop.
11-Press key to acknowledge from outside the car.
12-Alarm reset, lock, unlock, no problem, no alarms, no indications.
13-Switch on and start car, no problem, no alarm or indications.
14-The radio & aircon lost settings which I corrected, otherwise I noticed nothing.
So far its going fine on new battery.
Yes, I could have done it myself.
I went to a local cluedup electrical car shop, hes cluedup and work on all modern stuff including modern farm tractors etc, as well as Mercs, including W204.
I read about all the double power supplies in parralel etc.
The manual of my W204 explains the simply way.
He says no double connections. After he and one of his techs convinced me,... I 1-had the wrong battery issued by factory in the car(Aperage on these cars must be more), and 2) he guarantee the simple method will work as the manual said.
He ordered the expensive battery, and on arrival they came out to my home.
1-Brought new battery.
2-Unlock car, open bonnet, pull out keys.
3-Took off battery cover.
4-Disconnect Earth.
5-Disconnect Power lead.
6-Remove old battery, insert new battery.
7-Connect power lead.
8-Connect Earth lead.
10-Alarm went off, i sweat one drop.
11-Press key to acknowledge from outside the car.
12-Alarm reset, lock, unlock, no problem, no alarms, no indications.
13-Switch on and start car, no problem, no alarm or indications.
14-The radio & aircon lost settings which I corrected, otherwise I noticed nothing.
So far its going fine on new battery.
Yes, I could have done it myself.
Super Member
Joined: Mar 2011
Posts: 803
Likes: 37
From: Bay Area, CA
2011 C300 Sport, P1, MM, Wood, Heated FS, DIY rearview camera.
It is unbelievable that (1) MB has put in the wrong battery; (2) the wrong battery still lasts eight years.
Super Member
Joined: Nov 2008
Posts: 604
Likes: 29
From: SA
2008 C350-Sport-AMG-Active Agility Pack(Not reliable) +Izuzu KB6 3L(It seems Reliable)+Mazda
I doubt it had to do with quality, rather output. The starter sounds slightly more brisk on this one(Than the other one ever did). My car never stands outside when not in use at home, I think that helped(moderate temps9/15--to--35).
Newbie
Joined: Apr 2017
Posts: 4
Likes: 3
From: Pittsburgh PA
2012 C300 Luxury 4Matic
https://www.pepboys.com/product/deta...03.0L%2520DOHC
I know it was eight minutes because I arrived at 10 minutes before the 5pm Sunday closing time. Back on the road by 5:05.
How much time did you waste NOT doing the job yourself at the dealer?
Curious, what battery does the dealer cell? MB brand?
Last edited by TheDurk; Jul 8, 2017 at 03:07 PM.
Super Member
Joined: Sep 2015
Posts: 848
Likes: 87
From: Milwaukee, WI USA
2012 C300 4Matic
My battery went weak, the car refuse to start, I new its the battery as it was 8 years old and was coming for some time.
I went to a local cluedup electrical car shop, hes cluedup and work on all modern stuff including modern farm tractors etc, as well as Mercs, including W204.
I read about all the double power supplies in parralel etc.
The manual of my W204 explains the simply way.
He says no double connections. After he and one of his techs convinced me,... I 1-had the wrong battery issued by factory in the car(Aperage on these cars must be more), and 2) he guarantee the simple method will work as the manual said.
He ordered the expensive battery, and on arrival they came out to my home.
1-Brought new battery.
2-Unlock car, open bonnet, pull out keys.
3-Took off battery cover.
4-Disconnect Earth.
5-Disconnect Power lead.
6-Remove old battery, insert new battery.
7-Connect power lead.
8-Connect Earth lead.
10-Alarm went off, i sweat one drop.
11-Press key to acknowledge from outside the car.
12-Alarm reset, lock, unlock, no problem, no alarms, no indications.
13-Switch on and start car, no problem, no alarm or indications.
14-The radio & aircon lost settings which I corrected, otherwise I noticed nothing.
So far its going fine on new battery.
Yes, I could have done it myself.
I went to a local cluedup electrical car shop, hes cluedup and work on all modern stuff including modern farm tractors etc, as well as Mercs, including W204.
I read about all the double power supplies in parralel etc.
The manual of my W204 explains the simply way.
He says no double connections. After he and one of his techs convinced me,... I 1-had the wrong battery issued by factory in the car(Aperage on these cars must be more), and 2) he guarantee the simple method will work as the manual said.
He ordered the expensive battery, and on arrival they came out to my home.
1-Brought new battery.
2-Unlock car, open bonnet, pull out keys.
3-Took off battery cover.
4-Disconnect Earth.
5-Disconnect Power lead.
6-Remove old battery, insert new battery.
7-Connect power lead.
8-Connect Earth lead.
10-Alarm went off, i sweat one drop.
11-Press key to acknowledge from outside the car.
12-Alarm reset, lock, unlock, no problem, no alarms, no indications.
13-Switch on and start car, no problem, no alarm or indications.
14-The radio & aircon lost settings which I corrected, otherwise I noticed nothing.
So far its going fine on new battery.
Yes, I could have done it myself.
Having the battery be incorrect FROM THE FACTORY with all the internal quality controls has to be virtually impossible. If it were incorrect chances are you would have had other problems long before eight years. I would have to question the ability of your mechanic on that. How did he determine that?
MBWorld Fanatic!
Joined: Jun 2011
Posts: 2,366
Likes: 251
From: Canada
A car
Right now, you can get the Bosch Platinum AGM I got at Pep Boys for $164 (same promotion I got). Plus 8 minutes work in the parking lot beats $300.
https://www.pepboys.com/product/deta...03.0L%2520DOHC
I know it was eight minutes because I arrived at 10 minutes before the 5pm Sunday closing time. Back on the road by 5:05.
How much time did you waste NOT doing the job yourself at the dealer?
Curious, what battery does the dealer cell? MB brand?
https://www.pepboys.com/product/deta...03.0L%2520DOHC
I know it was eight minutes because I arrived at 10 minutes before the 5pm Sunday closing time. Back on the road by 5:05.
How much time did you waste NOT doing the job yourself at the dealer?
Curious, what battery does the dealer cell? MB brand?
Super Member
Joined: Oct 2014
Posts: 517
Likes: 22
From: California
Mercedes C250 Coupe
Gave me paperwork w/estimate a few moons back.
It was circa $230 American.
ez
