This tool puts a load on the battery that simulates the draw of a starter motor and allows you to see both the loaded and unloaded battery voltage. The second hand siren is likely to be just as old as the car, unless you know otherwise. Extremely hot or cold weather can also spell trouble for your battery, but this will usually only be an issue if the battery is already weak. i know this might be difficult but just by me asking a question any answers might start me thinking if you see what i mean? The problem with using a test light is that it can be very difficult to tell how much of a drain is present just from the brightness of the light. The posted views of our members are in no way the views of MBClub.co.uk or its owners. For instance, attempting to test an alternator by disconnecting a battery cable while the engine is running is not a good idea if you drive a modern vehicle. Some of the most common reasons for a car battery to die repeatedly include loose or corroded battery connections, persistent electrical drains, charging problems, constantly demanding more power than the alternator can provide, and even extreme weather. (over night) i notice that a while after i lock it (5-10mins or more) the wing mirrors fold back open? Yes except for the mirror driver memory settings? Battery drain. The corrosion may not even be noticeable in some situations, or you may see large white, blue, or green blooms of corroded material. How to troubleshoot Mercedes-Benz battery drain Step 1. When you perform a visual inspection of your battery, you may notice corrosion around the battery terminals, cables, or connectors. I have fitted a second hand siren 12 months ago due to little recharable battery not holding charge (which caused the indicators to flash all the time) and it has been fine since then. it seems like it might be (i think) something to do with the overhead panel module?
Some of the symptoms you describe can be related to the alarm so always the first thing to test. Headlights, or even a very dim dome light, will drain a battery dead overnight. However, it is vitally important to avoid getting any baking soda inside the battery cells. Why Do Car Batteries Go Dead in the Winter?
If the belt seems loose, it may actually prevent the alternator from generating enough power to charge the battery in addition to running everything else. If you use a multimeter for this purpose, it’s very important to use the highest possible amperage setting. Belts can also stretch with age. also the wing mirror glass forgets it driver setting? Loose battery connections can also cause problems. You can also test your battery with an inexpensive tool called a hydrometer, which allows you to check the specific gravity of the electrolyte in each cell. You can save on the cost of the battery by purchasing it online. i have also noticed that the RF key remote stopped working (and after a car battery re-charge started working again?) Can anbody throw some light on my problem like a loose connector maybe? What If Your Battery Keeps Dying When Driving? If you do decide to pick up your own load tester, it's important to remember that batteries that are shorted internally can explode under the right conditions. Cheers. If the test light illuminates, then there is some type of drain present in the system.
So if you're dealing with a battery that goes dead over and over again, it's worth checking it out at night when it's dark out when a faint or dimmed dome light will be easier to see. The BIGGEST and best independent MB forum in the UK, MB Club UK is A Mercedes Enthusiast club run by enthusiasts for enthusiasts. Most of those faults are related to locking and unlocking, as is the car alarm, while the alarm, when tested, might seen to work properly, it should not be trusted as it is now 11 years old… if it is the original siren… I would disconnect the alarm siren to see if any change in the faults. What to Do When Your Car Interior Lights Stop Working, How to Fix a Car Radio That Won't Turn Off, What to Do When the Gauges in Your Car Aren't Working, Why Your Car Won't Start Even Though the Lights Work. If you find that the battery cables are loose, there’s a good chance that you have located a big part of your problem. A battery tender can also help in the winter if it gets especially cold where you live, or if you don’t plan on driving your car for an extended period of time.
If you don't see anything obvious, like headlights or a dome light left on, then the next thing to check is the battery itself. Even small drains, like the memory function in your car radio, may kill a very weak battery. A poorly maintained or weak battery may not hold a charge very well. If you look inside the cells and see that the electrolyte level has dropped below the tops of the lead plates, that’s a problem. Dont know much about mirrors, is there supposed to be a setting for the drivers side?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. There may not be a lot you can do to avoid other issues, like a sudden parasitic drain, but dealing with that type of problem in a timely manner can also help prolong the life of your battery. visually check it. While it’s true that every single battery has to die eventually, the key to prolonging the life of a lead-acid battery like the one in your car is to keep it well maintained and in good working order. Ok cheers i will give it a go and let youm know.
It’s important to note, however, that there is a difference between a simple test and an in-depth diagnostic that actually gets to the root of the problem. If you’re dealing with a situation where your battery goes dead over and over, there’s a good chance that every time it dies like that, the ultimate lifespan of the battery is shortened. Battery in weak or poor condition.
Help so far has been brilliant thanks again. You will then need to identify the corresponding circuit, which will help you track down the specific component that is causing a problem. These and other interior lights are designed to shut off automatically, and if they fail to do so, they are fully capable of draining a battery dead overnight.
Common drains include glove box and trunk lights that come on, or remain on, when they shouldn't. Car batteries can die for a huge range of different reasons, and there’s always the chance that whatever went wrong won’t go wrong again.
Some of these problems are enough to kill a battery on their own, while others are usually coupled with a battery that is already weak or on its last legs. What Causes a Car's Electrical System to Suddenly Stop Working? If your alternator belt is loose, you may be able to tighten it. Some of these can be dealt with at home, and others will probably require a visit to your mechanic, but there’s no way to know for sure until you roll up your sleeves and dig in.
It may not display this or other websites correctly. Richard.
If a battery seems to die when you're driving, the charging system may be at fault. Even small drains, like the memory function in your car radio, may kill a very weak battery. A poorly maintained or weak battery may not hold a charge very well.
If your car battery keeps dying over and over again, one of the simplest explanations is that there is some kind of drain on the system that persists after you remove the keys and lock the doors.
Corroded or loose battery connections. In most cases where an alternator isn’t charging and the engine actually dies, it’s simply a case of a bad alternator that needs to be rebuilt or replaced. not sure? For a better experience, please enable JavaScript in your browser before proceeding. only time will tell. Car batteries are designed to power headlights, dome lights, and various other accessories whenever the engine is off, but they have a very limited capacity to do so. He also ghostwrites articles for numerous major trade publications. Richard. Hot or cold weather won't kill a battery that's new or in good shape, but a weak or old battery may fail in extreme conditions.
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