Why does the battery drain on my Mercedes W203?
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.
What should current be on Mercedes medic battery?
Connect one test lead to the battery post and the other to the negative battery cable. You should see a current draw of less than 0.1 Ampere or 100 milliamps. If your read is over this value we need to do further troubleshooting. The reading should ideally be under 0.05 ampere. Locate the fuse box in your car. Disconnect the fuses one at a time.
What causes a battery to go dead on an ECM?
Battery drain or dead battery A failed ECM power relay can also cause a battery drain or dead battery. If the relay shorts it can leave power on to the computer, even when the vehicle is turned off. This will place a parasitic drain on the battery, which will eventually cause it to go dead.
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.
What to do when battery drains on Mercedes medic?
Find a way to secure the switch pushed in. Use a screwdriver to lock the door latch. Manually press the door switch. Find a way to secure the switch pressed. Use a screwdriver to lock the door latch. If you have a fuse box in the trunk, open the trunk but place the latch in locked position. Make sure you have a fully charged battery.
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…
How to reset steering angle sensor in Mercedes medic?
As the windows and the sunroof reach fully open / fully closed positions, continue to hold the switch down or up for 5 seconds. The steering angle sensor must be reset by turning the steering wheel to full left and full right with the engine running. Clear the BAS/ETS/ESP and other instrument cluster warnings.
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…
Find a way to secure the switch pushed in. Use a screwdriver to lock the door latch. Manually press the door switch. Find a way to secure the switch pressed. Use a screwdriver to lock the door latch. If you have a fuse box in the trunk, open the trunk but place the latch in locked position. Make sure you have a fully charged battery.
What to do when your car battery goes to sleep?
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. Locate the battery in the trunk or in the engine compartment.
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. Locate the battery in the trunk or in the engine compartment.
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.
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.
Why does MY BMW Z3 battery keep draining?
The fact that every battery that’s been in the car has discharged to the “no-start” point in just a few days indicates the parasitic current draw must be significantly higher. Q I have a 1997 BMW Z3 roadster purchased used in 2001.
How to find an automotive parasitic draw dead battery?
At night look under the vehicle to check for light near the engine bay, to fix this problem replace the light assembly. If you can’t find the cause of the battery drain, a manual draw check of the electrical system will need to be performed.
Is the battery draining on my 2002 C220?
2002 C220/W203 Battery drain. Not seat modules. Overhead? Over the last two years, i’ve been experiencing periodical battery drain. Overnight the car won’t start. At first, i replaced the battery, still had the same problem. A fully charged battery can be drained, to the point that the car doesnt crank, in about 12-18 hours.
Is the battery on my Mercedes Benz W203 draining?
2002 C220/W203 Battery drain. Not seat modules. Overhead? | Mercedes-Benz Forum 2002 C220/W203 Battery drain. Not seat modules. Overhead? Over the last two years, i’ve been experiencing periodical battery drain. Overnight the car won’t start. At first, i replaced the battery, still had the same problem.
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.
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.
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.
How can I tell if my car battery is draining?
Make sure it is generating enough amperage. 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.