What can drain the battery on a Mercedes E350?

Last night I drove my E350 and parked it at 8pm. This morning my car didn’t start and it turned out to be a dead battery. The battery had 11 volts and did power some lights and almost turned over the engine. My question is what can drain the battery?

What should I do if my Mercedes battery dies?

If the battery should die on your Mercedes-Benz, the airbag light on the instrument panel may stay on after you hook up a new battery. The oil light indicator also may stay on, and the radio may not work until you reset its code. You can reset the airbag and oil lights with a service-light reset tool…

What should current draw be on Mercedes E350?

The diagnosis trees however indicates that anything close to 75mA is still a quite high current draw, and as BenzSid indicated, probing with a meter is still in order. That info is actually stored in the BCM (battery control module) on the negative terminal of the battery you’ll see a little black box.

How do you reset the radio on a Mercedes?

To reset the radio, you will need the code included with the paperwork from the car dealer. Insert the reset tool into the Mercedes’ data-link connector, which is near the hood-release latch. Turn on the ignition. Press the tool’s scroll button until “Mercedes” appears on the screen. Press “OK.”

What to do if your Mercedes Benz battery is dead?

Begin by disconnecting the negative battery cables on both cars. Caution: Your Mercedes-Benz’s electrical systems can get damaged, or the control units will trigger under voltage fault codes if you let the car run while connected to a dead battery.

Can a battery charger be used in a Mercedes Benz?

It can also cause electronics components in the car to malfunction and trigger under voltage fault codes for the control units in your Mercedes-Benz. The best option would be to use a battery charger if that is possible.

When does a Ford E350 battery go dead?

This 2008 Ford E350 van belongs to one of the local utility companies and the battery will go completely dead if it sits for more that two days. The standard routine, I connected my trusty Fluke meter in series with the battery negative post and terminal. There is a significant drain present as you can see in the next picture.

How do you change the battery on an E350?

Replacing the battery in your E350 involves removing the terminals. When you reconnect the terminals, your radio presets are likely to be cleared out. In some E350s, you may need to re-enter a security code to get your radio to work again. Check for this code in your owners manual – it will usually be either a sticker or small card in the booklet.

How often should I charge my Lexus E350 battery?

If you do alot of stop and start driving like I do, that isn’t enough to recharge the cell of the battery, it must be non stop driving time. Recommend that I get a 1.5 tricky charge device an hook to battery at least one night a week to keep the battery charged.

How often should I replace the battery in my Mercedes E350?

Replace the battery in your 2008 Mercedes-Benz E350 4Matic 3.5L V6 Sedan once every 4 years for optimal performance. Watch this free video to see how to replace a dead battery in your 2008 Mercedes-Benz E350 4Matic 3.5L V6 Sedan

When does a Lexus E350 battery go dead?

My lexus E350 battery goes dead if car is not used for a week. Had the battery checked with dealer says it is OK Clicking this will make more experts see the question and we will remind you when it gets answered.

What makes a battery die in a Mercedes Benz?

There is a current draw on the battery causing it to die. If the CAN system is not seeing shut down of all control modules in the car then it is not going to “sleep” have a draw test done on the battery. A good current draw is 30mA (milliamps) or less anything over 60 is killing your battery. Sid advice is the only way to ascertain the problem.

Why is the battery charge warning light not on?

If battery charge warning light was not on light the last time you drove your vehicle the alternator is working correctly. If you did notice the warning light on the battery is probably down on charge which is not the fault of the battery.

How can I tell if my Mercedes medic battery is draining?

Check that the glove box light does not stay on when the car is parked. The easiest way to check this is to open the glove box after the car is parked for a couple of hours. Place your hand near the glove box light bulb and feel it if it is warm. Be careful not to burn your hand. Aftermarket alarm system.

What causes a car battery to drain when turned off?

W203 models and others from the late 1990s through the mid 2000s often have defective power seat modules that cause battery drain when the car is switched off. Fix it for nearly no time or money. Loading…

What does it mean if your alternator is draining your battery?

If disconnecting the power cable from the alternator and stopped the current drain on your battery you should have seen a reading. This does not necessarily mean the alternator is bad. See below circled in yellow.

What should I do if my alternator fails?

If the battery is fairly new you will need to start the engine by jump starting or charging the battery using a battery charger. Once the engine is running test the alternator in the charging system. If the alternator fails, replace it with a new or rebuilt unit and re-test system, if the alternator tests ok proceed to the next step.

Can a car battery be drained by an alternator?

An automotive alternator is a device that converts power from the engine into electricity, which is used to charge the car’s battery. In some cases, however, the alternator can actually drain the battery, causing significant problems. Insufficient Alternator Voltage An alternator that’s not providing enough power can allow a battery to run down.

Can a bad alternator cause parasitic drain and still?

Just because your alternator is providing 14v to the OBD system doesn’t mean it has enough amperage to charge the battery correctly. Based on what you’ve said, it sounds like either bad alternator or some parasitic drain, my money is on alternator. seems to be the case with my dakota..had the alt.tested and shure enough it has a bad diode.

Why does my alternator not charge my battery?

Wiring Problem Even when the alternator is functional, if the wiring between it and the battery is damaged, it won’t keep the battery charged. A broken ground wire on the back of the alternator, a loose battery cable, or a faulty or dirty cable could prevent the alternator from providing an adequate charge.

What happens when a Mercedes Benz battery is dead?

When the battery is completely dead, you will know as nothing on the car turns on. The battery could be partially discharged in which case you will hear the clicking as shown in the video clip. When the battery is completely dead, you will know as nothing on the car turns on.

Is there a battery leak in a Mercedes medic?

Check for any leakage if you have older lead acid battery. Absorbed Glass Mat (AGM) batteries are sealed and you don’t need to worry about leakage. AGM type batteries is what newer Mercedes-Benz cars use. Voltage Regulator may be defective and needs replacement. Test the alternator. Make sure it is generating enough amperage.

Can a worn out battery on a Mercedes E350 be used?

An old or worn-out Mercedes-Benz E350 battery no longer discharges the same current to get you on the road, so rely on AutoZone for a quick and affordable upgrade. Cold mornings can be especially rough on every part of your Mercedes-Benz E350.

How many batteries does a Mercedes Benz E class have?

The Mercedes-Benz E-Class uses two batteries in its design. The auxiliary battery serves as a backup for the main battery.

Can you drain the oil from an E-Class AMG?

Some dealers reportedly use oil extraction as well, so it is an accepted practice. Draining from the oil pan ensures that all of the dirty oil is removed, but it is important to note that various Mercedes-Benz E-Class AMG models may have 2 engine pump drains and also have an oil cooler in the front bumper with its own drain.

How do you drain a Mercedes Benz W211?

Hand pump to remove coolant. To drain the radiator, you’ll first have to remove the front engine protection splash shield (sometimes referred to as a “belly pan”), a plastic cover attached beneath the bumper, to reveal the bottom of the radiator and petcock. This plastic cover is held in place with seven 8mm hex-head screws.

How do you drain a Mercedes Benz radiator?

To drain the radiator, you’ll first have to remove the front engine protection splash shield (sometimes referred to as a “belly pan”), a plastic cover attached beneath the bumper, to reveal the bottom of the radiator and petcock. This plastic cover is held in place with seven 8mm hex-head screws.

What should I do if my car battery is draining?

Remove the key from the ignition and let the car sit for at least 15 minutes. In some models you may need to wait up to 30 minutes for all the electronic systems to go “to sleep”. This will allow the car to shut off any electronic consumers that stay on for a brief period after the car is parked.

Why does my Berlingo battery drain after a day?

Here’s a guess. My Berlingo had a brand new battery early spring, and I realized immediately it was draining overnight (or after just a day or two). Totally flat, and it happened several times. It mostly started fine and ran fine but only after a fresh charge.

Why is the battery draining on my Mercedes medic?

If the car is left parked in high pedestrian traffic areas this could be a problem. It may cause the battery to drain within a couple of days in some models. Try to turn off the proximity key function in your car by looking up the instructions on the owner’s manual.

Is there a way to drain a battery in one day?

That seems like a tiny amount, but a single incandescent dome light pulls enough power to drain a battery in one day. Remember that the drain doesn’t have to take your battery to zero overnight, just low enough for it to not start.

What causes a car battery to drain overnight?

This happens when something – a glovebox light, an amplifier, any electrical component – is pulling power from the battery when it shouldn’t. Since the alternator isn’t generating vehicle electricity, the problem component pulls from the battery, slowly draining it overnight until your vehicle won’t start.

When to disconnect battery from parasitic drain?

If you’re too busy during the workweek and can’t get to it until you’re off, some short term fixes are to disconnect the battery at night, and carry a portable jump starter in your vehicle.

What causes a car battery to drain while driving?

Faulty Charging. If your charging system isn’t working properly, your car battery can drain even while you’re driving. Many cars power their lights, radio, and other systems from the alternator, which can make the battery drain worse if there’s a charging problem.

When was the last time my battery was drained?

Battery being drained Again! The battery is being drained even though the car is turned off. I had this problem before and while I had a lot of help diagnosing the problem, it stopped before I could find the problem. The title of the thread was “Battery being Drained” and it was dated June 10, 2006.

Why does my Miata battery drain all the time?

Recently experiencing battery drain and it appears to be sticking relay with electronic door locks. When the key is used to lock and unlock the car doors, there is not a problem. When the electronic phob is used to lock the doors, the relay sticks and draws about 5 Ma to draw down the battery overnight.

What can drain the battery in a car?

Even while your car is off, your battery provides power to things like the clock, the radio, and the alarm system. These things shouldn’t have a major impact on your battery. What may drain a car battery when it’s off, however, are things such as interior lights, door lights, or even bad fuses.

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