VodScanner Posted January 25 Share Posted January 25 Hello, I own a W204 2.2 2011 model. I am experiencing a recurring issue where the battery loses its charge often, indicating the need for a replacement battery. Upon taking it to the garage, the mechanic informed me that it requires a stop-start battery, despite the absence of a stop-start button. Is this accurate? If so, could someone provide guidance or indicate the correct path? Thank you. Link to comment Share on other sites More sharing options...
Captiva Posted January 25 Share Posted January 25 He is implying that you need an AGM battery, which has become prevalent due to its use in automobiles equipped with stop/start technology. Prior to the introduction of stop/start technology, these devices were used on some models, particularly where the battery is located in the passenger compartment or trunk due to their enhanced safety in the case of a collision. It is essential to ensure that you install the battery that is compatible with the car's specifications, whether it is an AGM battery or a conventional lead acid battery. This is because the charging characteristics and maximum voltage somewhat vary between the two types. Using an incorrect battery can result in suboptimal performance and may lead to the need for early replacement. Consider visiting your local authorised dealer's parts counter or specific Mercedes-Benz dealerships such as Newcastle, Edinburgh, and a few others mentioned on eBay. They often provide quite reasonable pricing for batteries, ensuring that you get the correct component. If you inquire, they will provide you with information on whether it should be AGM or not, as well as the capacity. I have observed that when purchasing from the parts counter in person, they often provide the service of installing the item on your vehicle upon collection. This convenience may justify paying a somewhat higher price to ensure proper installation. Link to comment Share on other sites More sharing options...
Markwe Posted January 25 Share Posted January 25 Link to comment Share on other sites More sharing options...
BuffUpdate Posted January 25 Share Posted January 25 Purchase a Varta battery, since they are the original equipment provider. There are other online vendors available on eBay. Personally, I like using batterymegastore, while Tayna offers similar products and services. Additionally, there are additional options to choose from. Next-day delivery is the standard practice. Link to comment Share on other sites More sharing options...
VodScanner Posted January 25 Author Share Posted January 25 Thank you. I have another question: Is the process just a direct replacement, or will I need to have the coding adjusted? I am uncertain whether to take my vehicle to a professional garage or do the repairs myself. I have consistently had Vauxhall vehicles and they have performed well. However, I am uncertain whether a Mercedes would provide a similar experience. Thank you. Link to comment Share on other sites More sharing options...
DownContent Posted January 25 Share Posted January 25 Stay physically active without the need for programming or other technical skills. Link to comment Share on other sites More sharing options...
Mantelle Posted January 25 Share Posted January 25 Do you not have a battery drain issue? If you want to replace the battery and the new one loses power, it is necessary to have the automobile inspected more thoroughly. Link to comment Share on other sites More sharing options...
VodScanner Posted January 25 Author Share Posted January 25 How can I ascertain this? I suspect that the issue lies with the battery, considering that I have had the vehicle for 3.5 years and have not replaced it so far. Link to comment Share on other sites More sharing options...
Markwe Posted January 25 Share Posted January 25 Examine one of the battery terminals to see a date imprint. Link to comment Share on other sites More sharing options...
Mantelle Posted January 25 Share Posted January 25 If you possess proficiency in using a multimeter, the task at hand involves inspecting each individual fuse. I recommend perusing the topic, as there are abundant threads available here and on YouTube that provide guidance on how to do this. An alternative, more expedient method would be to bring the automobile to a nearby independent Mercedes-Benz specialist for a STAR diagnostic. If you are certain that the issue lies with the battery, proceed with replacing it. However, it is advisable to first examine the output from the alternator. Ensure that it registers a voltage of 14 volts or more when the engine is running. The persistent issue of battery drainage in an MB is rather vexing. Link to comment Share on other sites More sharing options...
Markwe Posted January 25 Share Posted January 25 Consider opting for an Enhanced Flooded Battery (EFB) instead of an AGM battery. EFB batteries are more cost-effective and perform well when often doing short trips. AGM batteries outperform normal lead acid batteries, however they are not often suggested for continuous start-stop use. Link to comment Share on other sites More sharing options...
CrownChikk Posted January 25 Share Posted January 25 I am uncertain as to the source of your information, to be honest. The 2004 e320 model was equipped with AGM as a standard feature, whereas stop-start technology was not yet available at that time. The primary focus is on the pace at which the charge is delivered and the ability to retain the charge, rather than the start-stop mechanism. The "stop start" feature is just a utilitarian choice. Many batteries now available are labelled as 'stop start compatible', indicating that they may be used interchangeably. Is efb a recent innovation? Link to comment Share on other sites More sharing options...
DownContent Posted January 25 Share Posted January 25 Initiate a gradual charging process initially. Link to comment Share on other sites More sharing options...
Markwe Posted January 25 Share Posted January 25 Enhanced Flooded is a very recent technology. Volkswagen introduced the stop-start system in the Polo Formel E as early as 1984. Link to comment Share on other sites More sharing options...
CrownChikk Posted January 25 Share Posted January 25 I just searched for my Kuga and found that it is displayed as "efb," but "AGM" is not there. Is AGM exclusive to Mercedes vehicles? Link to comment Share on other sites More sharing options...
Captiva Posted January 25 Share Posted January 25 The absence of an Annual General Meeting (AGM) is not a prevalent industry norm. Link to comment Share on other sites More sharing options...
Strongspoi Posted January 25 Share Posted January 25 Do not confuse the presence of a stop/start button with the automobile having stop/start eco technology. Link to comment Share on other sites More sharing options...
Ledgerciao Posted January 25 Share Posted January 25 The establishment of AGM dates back to the 1980s. The primary purpose is military use. Link to comment Share on other sites More sharing options...
Ledgerciao Posted January 25 Share Posted January 25 OP, it is not uncommon for a Mercedes-Benz (MB) to render its own battery useless within a very short period of time, often ranging from 3 to 5 years. However, because your vehicle does not have a stop/start feature, it would be advisable to thoroughly examine the charging system and investigate the possibility of a parasitic drain before investing in a new battery. Link to comment Share on other sites More sharing options...
Markwe Posted January 25 Share Posted January 25 My car consumed a high-end Exide battery in little over three years. The battery in my Jaguar had been installed for a duration of 5 years before I sold the vehicle. Link to comment Share on other sites More sharing options...
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