Why is my Mercedes-Benz E class battery not working?
If the voltage rises above and/or drops below range, the voltage regulator may be at fault. The voltage regulator is described more closely in Step 4. If you want to monitor each battery’s voltage level independently, you will need to test directly at the battery with a DVOM (digital volt ohm meter).
Why does my Mercedes-Benz battery keep draining?
You try to start your Mercedes-Benz and the car is either completely dead or this happens: Battery drains happen when electronic equipment (consumer units) are constantly drawing current from the battery while the car is parked. One simple example is when lights are left on overnight. But it’s not always as simple as that.
What kind of battery does a 2003 W211 have?
I’m equipped to do anything, so let’s see if we can get this one sorted – it’s my younger brother’s car…. a 2003 E320 (WDBUF65J53A150123) with a hair under 160k miles. Battery drains close to dead overnight, needs a quick jump and it’s fine for the day.
Why does my Mercedes medic draw so much battery?
A radio receiver in the car continuously listens for wake up signal from the key. As the car receives a signal in the assigned frequency it wakes up to validate the key. This causes current draw for several seconds. If the car is left parked in high pedestrian traffic areas this could be a problem.
Where is the battery in a Mercedes Benz E-class?
The Mercedes-Benz E-Class has one main battery in the trunk and an auxiliary battery in the engine bay. With so many electronic components, things go wrong and could end up draining one of the batteries.
You try to start your Mercedes-Benz and the car is either completely dead or this happens: Battery drains happen when electronic equipment (consumer units) are constantly drawing current from the battery while the car is parked. One simple example is when lights are left on overnight. But it’s not always as simple as that.
What causes battery to die on Mercedes medic?
A defective electrical system, Control Unit or a fault on the CAN Bus (Controller Area Network) are also causes that can cause your Mercedes-Battery battery to die. To troubleshoot the current draw, you need a multimeter that can perform current reading.
Where is the battery relay on a Mercedes Benz?
The auxiliary battery relay is controlled by the battery control module. It is powered on when the auxiliary battery voltage level becomes low. It’s located in the engine bay against the firewall. When facing the engine from the front, you will see the relay to the right of the HVAC vent.
What should current voltage be on Mercedes Benz battery?
Press the R button three times. The current voltage level will now be shown. Once you start your vehicle, the voltage level should read between 13.8 volts and 14.8 volts. A reading in this range indicates your alternator is correctly charging your batteries, and your batteries are holding the charge.
What does it mean when your battery is reading 0 volts?
If your battery is: Reading 0 volts, chances are the battery experienced a short circuit Cannot reach higher than 10.5 volts when being charged, then the battery has a dead cell Fully charged (according to the battery charger) but the voltage is 12.4 or less, the battery is sulfated
What should the battery voltage be when the car is running?
The voltage, when the engine is running, should be in the range of 13.5-14.7 volts. When your car is running the cars alternator is charging the battery, this is why you should see a higher voltage. If you’re readings are significantly higher or lower than these then it would indicate a fault with the battery and/or the alternator.
If the voltage rises above and/or drops below range, the voltage regulator may be at fault. The voltage regulator is described more closely in Step 4. If you want to monitor each battery’s voltage level independently, you will need to test directly at the battery with a DVOM (digital volt ohm meter).
Press the R button three times. The current voltage level will now be shown. Once you start your vehicle, the voltage level should read between 13.8 volts and 14.8 volts. A reading in this range indicates your alternator is correctly charging your batteries, and your batteries are holding the charge.
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?
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!