How to check battery and alternator in Mercedes?

How to check battery and alternator in Mercedes?

The dreaded battery warning light always leaves us not knowing if its the battery, the alternator or both. Watch as I show you how to check the state of these components via the secret diagnostics menu built into your Mercedes vehicle. Haven’t Subscribed? What are you waiting on? Do it today. Loading…

Is it OK to change the battery in a Mercedes Benz?

You will be ok to drive the car, but replace the battery as soon as you can before it is not going to last very long. Mercedes uses battery group 49 and you want to save some $$$ you can get a AGM battery which is what the dealer uses for less on Amazon. Here is a highly rated battery on Amazon that will fit Mercedes Benz cars. 2.

What should the voltage be in a car alternator?

Typically you get BATTERY/ALTERNATOR VISIT WORKSHOP warning when the electrical system voltage in the car is below 12.6 volt. When the car is running the alternator produces electricity and the voltage should be above 13.5 volt. If you have a multimeter like this one, you can connect it to the battery terminals to get a voltage reading.

What to do if your alternator is bad in your car?

One thing you can do to troubleshoot your car is to go to Advance Auto Parts or AutoZone and have them do a FREE alternator / battery check. This test may be able to point you in the right direction. 3. Secondary Battery / Auxiliary Battery. Some Mercedes Benz models such as the E Class or the CLS Class have a secondary battery.

The dreaded battery warning light always leaves us not knowing if its the battery, the alternator or both. Watch as I show you how to check the state of these components via the secret diagnostics menu built into your Mercedes vehicle. Haven’t Subscribed? What are you waiting on? Do it today. Loading…

What kind of battery does a Mercedes Benz have?

Some Mercedes Benz models such as the E Class or the CLS Class have a secondary battery. This is a smaller 12 volt auxiliary battery that is used as back up. The system also checks the voltage of this battery and if it is lower than 12.6 volts you will get the error on your dashboard.

One thing you can do to troubleshoot your car is to go to Advance Auto Parts or AutoZone and have them do a FREE alternator / battery check. This test may be able to point you in the right direction. 3. Secondary Battery / Auxiliary Battery. Some Mercedes Benz models such as the E Class or the CLS Class have a secondary battery.

What does the ABS warning light on a Mercedes mean?

If the ABS warning light is also illuminated this signals that the braking system has malfunctioned and your brakes may not work properly. In this case the Electronic Brake Force Distribution (EBD) warning light may also be illuminated. Can I still drive with my parking brake and brake fluid light on?

When do I get battery / alternator VISIT WORKSHOP warning?

Typically you get BATTERY/ALTERNATOR VISIT WORKSHOP warning when the electrical system voltage in the car is below 12.6 volt. When the car is running the alternator produces electricity and the voltage should be above 13.5 volt.

How can I tell if my alternator needs to be replaced?

First check the battery voltage to confirm if it’s the alternator. If it is usually just the voltage regulator needs to be replaced.

What causes a battery warning light on the dashboard?

See how you can fix the battery warning light on dashboard with this five problem that you can look at. While the battery light might seem like there is a battery problem, but in fact there could be other numerous issue causing the battery light to activate. To see what is really wrong with the car see this video for things you can check.

Why does my car say battery alternator VISIT WORKSHOP?

Basically, car works fine… but at least once a day it gives me a “BATTERY ALTERNATOR- VISIT WORKSHOP” message… only pattern I see is that its usually cold out, but it could just be a coincidence.

First check the battery voltage to confirm if it’s the alternator. If it is usually just the voltage regulator needs to be replaced.

Where can I buy a new C class battery?

I’m not sure which year/model of C-Class you have, but you can find the battery hiding under the cabin air filter if you need to replace it. Any general auto parts store should carry a comparable OE replacement battery if you dont want to buy one from the MB dealership.

Where is the auxiliary battery on a Mercedes Benz?

Open the hood and locate the auxiliary battery on the passenger side of the engine bay. Remove the 10mm plastic nut from the cabin filter housing. Remove the 10 mm nut from the top bracket. Lift the bracket. Remove the 10mm bolt from the negative battery terminal.

Typically you get BATTERY/ALTERNATOR VISIT WORKSHOP warning when the electrical system voltage in the car is below 12.6 volt. When the car is running the alternator produces electricity and the voltage should be above 13.5 volt. If you have a multimeter like this one, you can connect it to the battery terminals to get a voltage reading.

Typically you get BATTERY/ALTERNATOR VISIT WORKSHOP warning when the electrical system voltage in the car is below 12.6 volt. When the car is running the alternator produces electricity and the voltage should be above 13.5 volt.

Can a bad car battery cause an alternator to not charge?

In theory a car can run only with the alternator charge, but this can cause heavy voltage spikes and other strange symptoms so this means that a bad car battery can cause an alternator to not charge also. Cars are increasingly coming with modern electronics.

Some Mercedes Benz models such as the E Class or the CLS Class have a secondary battery. This is a smaller 12 volt auxiliary battery that is used as back up. The system also checks the voltage of this battery and if it is lower than 12.6 volts you will get the error on your dashboard.

What happens when the alternator of a car is dead?

The alternator and the car’s battery work hand in hand. A good battery should give you service for the next five years before its lifespan ends. If your battery is dead, then it will not give power to the car’s alternator. The alternator normally lasts longer than the battery.

In theory a car can run only with the alternator charge, but this can cause heavy voltage spikes and other strange symptoms so this means that a bad car battery can cause an alternator to not charge also. Cars are increasingly coming with modern electronics.

The alternator and the car’s battery work hand in hand. A good battery should give you service for the next five years before its lifespan ends. If your battery is dead, then it will not give power to the car’s alternator. The alternator normally lasts longer than the battery.

Can a battery be worn as an alternator?

IF the VR checks out, ensure the electrical harness to/from the alternator is secure and not damaged. If the vehicle has significant amount of miles (ie. 100,000 +), the alternator brushes may be worn. Please note, the battery is only used (under normal conditions) to start the vehicle.

Why does the battery light come on after the alternator is replaced?

This would make the Battery Light come on. It is also possible that there is a problem with the fusible link or the alternator fuse for the charging system.

What to do if your alternator goes out?

The first thing to check is the battery light on the instrument cluster. This light bulb is part of the alternator field circuit; if it burns out the alternator will not charge. Simply turn the key on and see if it illuminates briefly then goes off. If the light does not illuminate, you’ll need to replace it before continuing.

Why do I get battery alternator VISIT WORKSHOP error message?

These are the main reasons why you are getting the Battery Alternator Visit Workshop Error Message. If you need to replace any of the batteries you can order them on Amazon using the links below and also help us at the same time. Malfunction electrical consumers switched off.

Why does my alternator have a bad connection?

I would suspect a bad connection is the real cause but the alternator may have an intermittent problem internally. The simple and no cost items should be done first. I would first clean the connections to the alternator. If you work on the main output lead of the alternator be sure to remove the ground lead to the battery first.

What kind of diagnostic facilities does the W203 C230 have?

I do not know what diagnostic facilities your W203 C230 has – but knowing that the W209 CLK is largely based on the W203 design, I wonder if you also have this information available at the cluster. This thread is from the W209 sticky section.

These are the main reasons why you are getting the Battery Alternator Visit Workshop Error Message. If you need to replace any of the batteries you can order them on Amazon using the links below and also help us at the same time. Malfunction electrical consumers switched off.

I would suspect a bad connection is the real cause but the alternator may have an intermittent problem internally. The simple and no cost items should be done first. I would first clean the connections to the alternator. If you work on the main output lead of the alternator be sure to remove the ground lead to the battery first.

What does it mean when battery and alternator are switched off?

In this case you may get error message saying: malfunction electrical consumers switched off. Check your batteries and alternator. • The battery control module (BCM) also activates the battery isolating relay (K57/2) if necessary. A distinction is made between 2 states:

What’s the problem with a new alternator and battery?

Had it installed at a mechanic and the same problem would happen. After being jumped, it would start but putter out in like 4 minutes. The mechanic went out of their way and bought a different alternator from a different vendor; installed it and the same problem happened.

How can I tell if my alternator is working or not?

If you’re not 100% sure, you can use a multimeter, or a voltmeter, to check the current coming from your battery. Attach the positive lead to the positive battery terminal, that’s the red one, and then the negative leave it to the black terminal. With the engine off you should be getting a reading of 12.5 volts on your multimeter.

Is there a problem with the alternator in Liberty?

Discussion in ‘ Liberty ‘ started by jonahb1987, Jul 10, 2019 . I recently had a breakdown. At first we thought it was the alternator, so I bought a new one. Had it installed at a mechanic and the same problem would happen. After being jumped, it would start but putter out in like 4 minutes.

Can a car battery be drained by an alternator?

While you might initially think that any problems with electrical things like lights or radio not working are directly related to the battery, the alternator is actually where most of the power in your vehicle comes from. Consider that if you were to leave the lights of your car on overnight by the next day your battery might be drained completely.

Why does my Mercedes Benz alternator keep failing?

The alternator charges the battery and provides your car with a constant source of electricity while the engine is running. Over time, the alternator will begin to fail and cause trouble with the various electrical devices in the car.

How to replace alternator in Mercedes Benz W203?

Turn the tensioner all the way counter-clockwise and insert a retaining pin between the rotating part and the tensioner base. If you do not have a retaining pin you can use a 5mm Allen. The alternator is held to the engine by two bolts (red arrows). Use an E14 Torx (red arrow) and remove the two bolts.

Can a new alternator be installed on a low battery?

WARNING!!! The battery must have a charge in it of at least 12.8 volts. If the charge is lower than that, take the battery to an auto parts store and they should deep charge it for free. You should never install a new alternator in a system with a low charge battery. You could fry the bridge and then you are back to square one!

Why does my alternator not charge on tickover?

On checking the battery voltage was low – 11.8V engine running. Battery was replaced about 1 month ago.After much investigation discovered that the alternator does not ‘kick in’ until I rev the engine to approx. 3000rpm – it then charges away happly for the rest of the journey (at around 14.5V) even on tickover. Has anyone seen this problem before?

WARNING!!! The battery must have a charge in it of at least 12.8 volts. If the charge is lower than that, take the battery to an auto parts store and they should deep charge it for free. You should never install a new alternator in a system with a low charge battery. You could fry the bridge and then you are back to square one!

On checking the battery voltage was low – 11.8V engine running. Battery was replaced about 1 month ago.After much investigation discovered that the alternator does not ‘kick in’ until I rev the engine to approx. 3000rpm – it then charges away happly for the rest of the journey (at around 14.5V) even on tickover. Has anyone seen this problem before?

Can a Mercedes 84 300D use an 80 amp alternator?

Rebuilt Alternator. The 80 amp one at least on My 84 300D would use the same Connector. It just needs to be swapped. The also sell higher Amperage Alternators that will fit but you need to change the Wires to it as it does not have a Connector; uses “Eye” type Connectors.

Why does the battery light come on on my Mercedes Benz?

The message log still indicated a red battery but there was no battery indication on my display. Turn the car off and back on clears the message log. Any thoughts as to what might be going on? Ok, so I had the rear battery replaced and drove about 8 miles to work and no battery light. Drove another 2 miles on my way home and the light comes on.

What are the warning lights on a Mercedes Benz?

The following are warning lights and indicators found in vehicles built by Mercedes Benz. Click a link to learn more about each one. They are roughly ordered by importance, which tends to be by color (red, amber, yellow, orange, green, blue, gray), but there are over 40 of them so be patient!

What kind of battery does Mercedes E320 have?

Vocational, Technical or Tra… 2004 E320 >bought car with battery visit workshop light on. New aux battery provided. >Drove 4 days, no issue >Evening, 95F outside, car … read more

Why does the battery light come on on my Mercedes?

The smaller battery can often fail & when disconnected can store a fault in the battery control module (BCM), this can cause the warning on the dash to come on.

Rebuilt Alternator. The 80 amp one at least on My 84 300D would use the same Connector. It just needs to be swapped. The also sell higher Amperage Alternators that will fit but you need to change the Wires to it as it does not have a Connector; uses “Eye” type Connectors.

I do not know what diagnostic facilities your W203 C230 has – but knowing that the W209 CLK is largely based on the W203 design, I wonder if you also have this information available at the cluster. This thread is from the W209 sticky section.

You will be ok to drive the car, but replace the battery as soon as you can before it is not going to last very long. Mercedes uses battery group 49 and you want to save some $$$ you can get a AGM battery which is what the dealer uses for less on Amazon. Here is a highly rated battery on Amazon that will fit Mercedes Benz cars. 2.

When to replace battery, alternator, or starter?

When you check these three, always start with the battery. It’s most often the part that failed, and it’s also the cheapest part to replace. A car battery should last about four to five years. It is not made to hold a charge for that long, so it gets recharged by the car’s alternator while you drive.

What does it mean if your alternator is not working?

The Alternator A dead car battery is the first sign that something might be wrong with the alternator. If your battery is good, and your alternator isn’t working, the battery will still lose its charge because the alternator isn’t keeping it charged.