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parasitic load

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Question
Vehicle won't start...one click.
Hi there. What seems to be happening is there is a parasitic load on the battery when the ignition key is off. What this means is that something is on when it should be off. To check this condition, first...
Question
Car won't unlock electronically, nor mechanically.
Hi there. What seem to have happen is the battery went dead over night. If there was no sign of power, then the battery drained with a parasitic load overnight. The ECM and the fuses are protected to keep water...
Question
Car radio and odometer will not shut off.
Hi there. Find the power source to the radio and see where it is leading within the dash. It is possible that the wires may have a short within each system. This will cause the load on the battery when...
Question
Check gauge light is on and Battery voltage is dropping. The battery is failing to stay fully charged.
Hi there. First the battery will need to be charged to 100% charge of 12.6 volts. Then load test the battery and see if the battery can hold a charge after a load for 30 seconds. If the battery can...
Question
Will not shift and stuck in 1st gear.
Hi there. If the battery keeps going dead overnight, then there is a parasitic load applied to the battery. Charge the battery to a full charge of 12.6 volts. With the battery installed in the car, remove the negative battery...
Question
My car battery is dying while it's parked. I replaced the battery and in just a week it died while sitting parked overnight.
Hi there. There could be a parasitic load on the battery causing it to drain overnight. To check this symptom perform the following: Remove the negative battery cable (-) Get a digital meter and put one lead on the...
Question
Battery runs down in two days if the engine is not running. The alternator has 14 volts.
Hi there. It seems that there is a parasitic load on your vehicle's battery when the vehicle is sitting and not running. Check the battery for a voltage and see if the charge is 12.6 volts. If the battery is...
Question
I have XJ8l 207. I have a ploblem, the battery died on me and the system whet down. I charge the battery, but keeps on loosing power.
Hi there. For the battery to be going dead on your vehicle, there could be a parasitic load on the battery (something on when the key is off). To check this condition, perform the following steps: Remove the negative...
Question
My car doors keep unlocking and locking after I turn off the car and it drains my battery. What do I do?
Hi there. Check all of the door switches on the door jams. The driver door or passenger front door will cause the doors to unlock after locked if the switch is not working. This is like the driver door open...
Question
My 1991 Mercury Cougar LS has a replaced alternator and new battery but it seems the battery dies over night and the car will not start.
Hi there. It seems that there is a Parasitic Load on your battery. This is a load of something on when the key is out of the ignition switch and the doors shut. To check this condition perform the following:...
Question
Car starts but won't drive and all the lights on the dash board are on.
Hi there. The battery is beyond charge and needs replaced. After replacing the battery, you would need to check for a parasitic load on the vehicle to see why the battery lost power. Disconnect the negative battery cable and put...
Question
Dead truck battery every time it's left off for a few hours.
If the battery is new and charging system output has been measured and is within specifications, the only reason a battery will discharge is if the car sits for a long period of time (batteries will self-discharge even if not...
Question
I have a 2011 Honda Accord coupe battery keeps going dead, replaced battery alternator was tested by Honda...still having the same
If the battery is new (or has passed a load test) and charging system output has been measured and is within specifications, the only reason a battery will discharge is if the car sits for a long period of time...
Question
New battery drained of power in one week
If the battery is new and charging system output has been measured and is within specifications, the only reason a battery will discharge is if the car sits for a long period of time (batteries will self-discharge even if not...
Question
2011 Nissan will not crank and the battery goes dead after one year.
Hi there. The battery is the remote key fob will only last about 8 years. Since it is now 2017, the battery is now 8 years old and could have lost its charge. The chip in the key tells the...
Question
'00 Buick Century Custom. V6 3100. I am at a loss...
Prior to performing diagnostics be sure you have a fully, 100% charged battery that passes a load test. Then, confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. If the immobilizer system...
Question
Battery Drain
If the battery is new and charging system output has been measured and is within specifications, the only reason a battery will discharge is if the car sits for a long period of time (batteries will self-discharge even if not...
Question
I have a short that drains the battery overnight.
There is a parasitic load applied to your battery with the ignition is off. Keep the test light on the battery and turn on one thing at a time and watch the light. If the light goes out, then that...
Question
the ac/heater draining out the battery. took out the fuse, now it doesn't. need a new part? electrical problem?
The problem you are describing is, of course, due to current flowing in a circuit even when the circuit(s) has been commanded off. This is referred to as a "parasitic" load, sometimes know as a phantom load, too. The cost...
Question
I can get the car to unlock when I click the button and when I try the key in the door, it groans and doesn't move.
The door locks on a vehicle will unlock with a voltage above 5 volts. The groaning sound that you are hearing is the door lock actuators trying to operate as you move the door lock cylinder manually. Try starting the...

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