Q: Dead battery from loose bolt connected to battery terminal

asked by on December 16, 2016

dead battery from loose bolt connected to battery terminal . would that cause a dead battery and would it be worth replacing the bolt

Battery Terminal Ends Replacement $91.51 - $110.35 Get a Quote

Yes, a loose-fitting or corroded battery cable to battery post connection can certainly lead to a dead battery. Corrosion builds up between the battery post and cable, creating electrical resistance. This becomes harder and harder for the alternator to charge the battery, and eventually the battery discharges, and goes dead. Clean the connectors and replace the bolt and/or cable ends. The battery may be toast by now as well - have it checked. I would recommend a battery charging system inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose and correct this problem.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Starter not engaging at all but passed bench test

You will need to check the voltage at the starter when someone is cranking it to make sure cables are sending all the voltage to it. You can do a voltage drop on the cables to see if one is...

Cranks but does not start.

Hi there. Check the battery on the vehicle and make sure that it has enough voltage to start the vehicle. If the vehicle is cranking up and it sounds as it is about to start but it does not start,...

Will not start even though I jumpstarted.

You may have an issue with your fuel or ignition system. The battery may be dying being brand new because of continuous cranking of the starter in attempt to start the vehicle. If the fuel or ignition systems have any...

Turn key to start, lose all power, it resets and starts. Battery is not dead.

If you are losing all battery power intermittently but your car's battery is testing good, check the battery clamp connections to the cables for corrosion. The cables will show green tinted corrosion at or near the connections where the cables...

My car won't start but does make noise

Hello there, many common faults will cause your 2008 Toyota Yaris to crank but not start. The most likely is the battery, fuel pump, battery terminals, starter, battery cables, ignition switch, or a wiring harness fault. A qualified Technician such...

Could I be having transmission trouble and alternator trouble?

Hi there. To start with, the lights could be dimming for the alternator is not producing enough amperage. If the battery is good and holds a strong charge, put a load on the battery while the engine is running at...

No crank no start.

Hi there. Check the battery cables and make sure that they are tight and clean. Check the cables that attach to the starter and make sure that they are all tight and clean. The starter remote wire could have an...

Car is dead, no signs of "life" at all.

Since you ran the battery dead several times before you replaced the alternator, you caused the battery to get sulfated internally. The lead acid inside a battery will only last for so long. Most batteries will last between 3 to...

Cars light and everything turns on but won't start and no nose

Be sure not to remove the battery cables if and once the vehicle is running. Removal of the battery from the circuit at that time can cause a voltage excursion which will damage the PCM (powertrain control module or "vehicle...

Related articles

Symptoms of Bad or Failing Battery Terminal Ends
If you experience problems starting and powering the car or find corrosion on the battery terminals, you may need to replace the terminal ends.
How Long Does a Battery Cable Last?
Transferring Transferring the current from the battery to the starter and alternator is the job of the battery cables. Every time you try to start your car, the battery cables will have to deliver the power needed to fire off...
Symptoms of a Bad or Failing Battery Cable
If you experience problems starting and powering the car or find corrosion on the battery terminals, you may need to replace a battery cable.