If you need to jump start your car in Perth, it is important to find out why the battery has gone flat. CMM Automotive recently attended an LDV van in Wangara after its battery lost enough power that the vehicle would no longer start.
At first, the problem appeared to be a straightforward flat battery. However, further testing showed that the battery wasn’t the main cause. The LDV had a faulty alternator, which meant the vehicle could not charge the battery correctly while the engine was running.
LDV Van With a Flat Battery in Wangara
The owner contacted CMM Automotive because the LDV van would not start.
A flat battery is one of the most common reasons for a vehicle failing to start. However, simply jump starting the vehicle doesn’t always solve the underlying problem.
We attended the van onsite in Wangara and got the vehicle started. Once the engine was running, we could check the charging system and determine whether the alternator was supplying the battery with the correct charge.
Testing revealed a charging problem.
The alternator was faulty and wasn’t providing the battery with the power it needed.

How Can a Faulty Alternator Cause a Flat Battery?
The alternator plays an important role in a vehicle’s electrical system.
Once the engine starts, the alternator produces electricity for the vehicle’s electrical components. It also replenishes the battery after the battery supplies power to start the engine.
When an alternator stops charging correctly, the vehicle begins relying on the energy stored in the battery.
Eventually, that stored power runs out.
The driver may first notice electrical problems, warning lights or difficulty starting the vehicle. If the alternator output becomes low enough, the battery can eventually become completely discharged.
That was the problem with this LDV van in Wangara.
Why Jump Starting Wasn’t the Complete Solution
A jump start provided enough external power to get the LDV running, but it couldn’t repair the faulty alternator.
This is an important difference.
If a battery has simply discharged because someone left the lights on, a mobile car jump start in Perth may get the vehicle running again without a major underlying fault.
When the charging system isn’t operating correctly, the battery can quickly lose power again.
The vehicle may even stop while driving if the alternator fails completely and the remaining battery power becomes exhausted.
For this reason, identifying the cause of the flat battery was more important than simply getting the engine started.
Signs of a Possible Alternator Problem
An alternator fault can sometimes develop gradually. Drivers may notice symptoms before the vehicle eventually refuses to start.
Possible warning signs include:
- Battery warning light appearing on the dashboard
- Headlights becoming dim
- Electrical accessories operating slowly
- Repeated flat battery problems
- Slow engine cranking
- Vehicle starting after a jump but becoming flat again
- Electrical warning messages appearing
- Engine stopping after the battery loses its remaining charge
These symptoms don’t automatically confirm a faulty alternator. Battery condition, electrical connections and other components can cause similar problems.
Testing helps identify the actual fault.
Checking the Charging System After a Jump Start
When a vehicle requires repeated jump starts, replacing the battery without checking the charging system can result in unnecessary expense.
A good battery still needs the alternator to recharge it.
For the LDV in Wangara, checking the charging system after starting the engine revealed the real cause of the breakdown.
This allowed us to explain the problem to the owner rather than simply jump starting the van and leaving without identifying why the battery had become flat.
Mobile Jump Start Assistance in Wangara
A vehicle that refuses to start can create a major inconvenience, particularly when it is a work van needed throughout the day.
CMM Automotive provides mobile jump start assistance in Perth, allowing us to come directly to the vehicle.
Our mobile service means we can assess the starting problem onsite. Where possible, we can also investigate why the battery has lost its charge.
Sometimes the battery itself has failed. Other times, as this LDV demonstrated, another component is responsible.
Need to Jump Start Your Car in Perth?
If your car or van has a flat battery, CMM Automotive can come directly to your location and help get the vehicle started.
Our Mobile Car Jump Start Perth service covers Wangara and surrounding Perth suburbs.
Rather than assuming every no-start problem requires a new battery, we can assess the vehicle and look for signs of an underlying fault.
This LDV van was a good example. The battery was flat, but the faulty alternator was the reason it wasn’t receiving the charge it needed.
Finding that problem helped prevent the owner from simply charging or replacing the battery only to experience another breakdown.
Frequently Asked Questions
Can a faulty alternator make my battery go flat?
Yes. If the alternator isn’t charging correctly, the vehicle will gradually use the power stored in the battery until the battery becomes discharged.
Will a jump start fix a faulty alternator?
No. A jump start may provide enough power to start the engine, but it won’t repair an alternator or charging-system fault.
How can I tell if my battery or alternator is faulty?
Both can cause similar starting problems. Testing the battery and charging system helps determine which component is responsible.
Can CMM Automotive come to my vehicle in Wangara?
Yes. CMM Automotive provides mobile jump start and roadside assistance services throughout Wangara and many other Perth metropolitan suburbs.
