See if any diagnostic trouble codes were set via the OBD-II on board diagnostics. Prior to performing diagnostics be sure you have a fully, 100% charged battery. Confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. If the immobilizer system is on, you may see a security warning light. If the warning light is on, to temporarily override the immobilizer system, see these instructions. If there is no starter motor operation at all, that is if there is no starter operation with the key held in the "start" position, the procedure is to test for power to the starter motor. If there is no power, then the electrical circuit supplying the motor has a fault (or, somehow the immobilizer system is on). That circuit begins at the battery and includes grounds, wiring (some of which is very heavy cabling), fuses, relays, the ignition switch and terminations. Basically, with a fully charged battery, and with the key held in the "start" position, the starter is either getting power or it isn’t. With the key in the "start" position, if the starter motor is getting power but the starter doesn’t work, then the starter is condemned and replaced. Note that starters can and sometimes do develop intermittent faults due to bad spots on the armature. The bottom line is if there is battery voltage to the starter (and no excessive voltage drop) and yet the starter doesn’t work, it’s dead. If you desire that a certified mechanic resolve this, please request a no start diagnostic and the responding certified mechanic will get the problem diagnosed and repaired for you. Please let us know if you have further concerns or questions as we are always here to help you.
How to Identify and Fix Common car Problems ?
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A dead battery is often the most common reason your car won`t start. Batteries age out, so if it`s been some time since it was replaced, you should visit us.
The most common reasons a Mazda CX-9 won`t start are a dead battery, an alternator problem, or failed starter.
The most common reasons a Mazda CX-7 key won`t turn are a binding steering column/lock, an ignition switch issue, or a problem with the ignition key. Search our network of RepairPal Certified shops near you to speak with a technician about your issue.
The security indicator light in the instrument cluster flashes every 2 seconds until the system is disarmed. The system is disarmed when the ignition is switched ON with the correct programmed key. The security indicator light illuminates for about 3 seconds and then turns off.
Why won`t my car start but I have power? If you attempt to start up your car but the engine won`t turn over and the dashboard lights up, then you most likely have an issue with your battery. You could have a damaged or corroded battery terminal, which is stopping the engine from starting up when you fully turn the key.
If the car cranks when you turn the key, but the engine won`t start, it could be because fuel isn`t getting to the engine. One potential reason for this could be dirty fuel injectors. Over time, the fuel injector nozzles can become clogged with rust, corrosion or debris.
To disarm the system and start your engine, use the correct, programmed key that came with your Mazda3. The security light will illuminate for three seconds and then turn off.
The issue with the anti-theft system will prevent the car from starting. Until the issue is fixed, you won`t be able to get the car to start again.
One common culprit for this problem is the crankshaft position sensor, which measures the position and speed of the crankshaft. The computer uses the information from this sensor to know when to fire the spark plugs. If the sensor isn`t working, the spark plugs won`t fire, keeping the engine from starting.
The battery can be fully charged but still not be able to start the vehicle if it is failing or has a dead cell. Other likely issues are the fuel pump, ignition switch, battery cables, starter, or a clogged fuel filter.
It is possible that the problems that you have been experiencing with the bad alternators have damaged the battery causing it to be weak. 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.
Park in a well-ventilated area and turn off the ignition. Look for the negative battery terminal with a black cap and a negative (-) symbol. Loosen the negative terminal bolt and pull the negative cable from the battery. Hold the cable away from the battery for between 30 to 60 seconds.
If your key fob still isn`t functioning after you`ve replaced the batteries, the problem may be with the internal contacts, such as the buttons or the battery connector terminals. It`s also possible that your car and remote unpaired from each other after you took the batteries out.
Do I need to reprogram the key fob after changing the battery? Typically, you do not need to reprogram the key fob after changing the battery. However, if you`ve replaced not just the batteries but also some of the internal wiring and electronics, you may need to reprogram it by pairing it with your vehicle once again.
If your key fob isn`t working after replacing the batteries, you may need to reprogram it or check for loose buttons and broken battery terminals. If your remote key fob isn`t working and you`ve already replaced the battery, you may need to reprogram the key.
This usually happens because of low batteries, but shock can also cause the fob to lose its pairing. Most remotes can be reset, so check your car`s user manual for the resetting sequence. If resetting fails to solve the problem, the fob will need to be reprogrammed.
If your ECU controls the anti-theft system, disconnecting the battery may lock you out of your car. Like desktop computers and most other electronics, disconnecting the battery cable for a short period will not fully reset your ECU due to the residual power remaining in the circuits.
Turn the key backward two places to the Lock position, then wait three more minutes. When that has elapsed, try to start the car. There`s often a fuse associated with the immobilizer, and like all fuses, it can blow. Check the owner`s manual to locate the fuse and assess its condition.
If you lose a key, an Authorised Mazda Repairer will reset the electronic codes of your remaining keys and immobilizer system. Bring all the remaining keys to an Authorised Mazda Repairer to reset. Starting the vehicle with a key that has not been reset is not possible.
If the engine is shut off while the indicator light is flashing, you will not be able to restart it. Because the electronic codes are reset when the immobilizer system is repaired, the keys are needed. Make sure to bring all the keys to an Authorized Mazda Dealer so that they can be programmed.
This blinking red light can be referred to as the anti-theft or immobilization light. The anti-theft light indicates that you need your key to start the vehicle, and it also alerts any car thief that this vehicle has an anti-theft system.
Some Security Systems for Cars Will Drain the Battery
The wiring to the alarm on these systems goes directly to the battery, and they will slowly take away energy from the battery. Eventually, this can lead to the failure of the battery. It generally happens later in the life of a battery.
Battery Current Sensor Problems
Dirt and Debris: Dirt, debris, or corrosion on car batteries can penetrate into the sensor causing malfunctioning. This failure can lead to a number of electrical problems including no-start.