If your car keeps needing jump starts, replacing the battery isn’t always the answer. In many cases, the real problem is that the battery isn’t being charged while you’re driving.
At Avant Auto Assist, we regularly attend roadside assistance call-outs where customers believe they have a flat battery, only for our diagnostics to reveal a completely different fault.
This recent breakdown in Wigan highlights why professional testing is essential before replacing any parts.
Real Roadside Assistance Call-Out in Wigan
We received a call from a customer in Wigan whose vehicle would not start outside their workplace.
The customer explained:
- The battery had been jump-started two days earlier.
- The vehicle started normally after that.
- The car had now gone completely flat again.
- They wanted another jump start.
We provided an estimated arrival time of 30 minutes and arrived within 25 minutes.
Battery Test Looked Healthy
When we arrived, we carried out a full battery diagnostic.
Although the battery had enough voltage to start with assistance, something didn’t look right.
Rather than replacing the battery immediately, we continued testing the charging system.
Alternator Wasn’t Charging the Battery
Using professional diagnostic equipment, we tested the alternator output.
The alternator was producing significantly less charging voltage than expected.
This meant the battery was never being fully recharged while the customer was driving.
Every journey slowly drained the battery until eventually the vehicle would no longer start.
Temporary Jump Start - Permanent Solution Needed
We successfully jump-started the vehicle and confirmed it was safe for the customer to drive directly to a garage.
We explained that another battery replacement would not solve the issue because the charging system itself required repair.
The customer appreciated the honest advice and arranged for the alternator to be replaced.
Why Alternator Faults Are Often Misdiagnosed
Common signs of a failing alternator include:
- Battery repeatedly going flat
- Battery warning light appearing
- Dim headlights
- Electrical faults
- Vehicle needing repeated jump starts
Without proper diagnostics, many drivers spend money replacing batteries that aren’t actually faulty.
Our Roadside Assistance Services
Avant Auto Assist provides:
- Jump starts
- Battery diagnostics
- Mobile battery replacement
- Vehicle recovery
- Alternator and charging system checks
- Vehicle diagnostics
- Spare tyre changes
- Car lockouts
- Emergency fuel delivery
Coverage Areas
We provide roadside assistance across:
- Wigan
- Manchester
- Bolton
- Liverpool
- Preston
- Greater Manchester
- North West England
- Nationwide UK coverage
Frequently Asked Questions
Can a bad alternator look like a flat battery?
Yes. If the alternator isn’t charging correctly, the battery will eventually become discharged.
Should I replace the battery first?
Not until the charging system has been tested.
Can you diagnose alternator faults roadside?
Yes. Our technicians can test both the battery and charging system before recommending repairs.
Need Roadside Assistance in Wigan?
If your car keeps needing jump starts or won’t start at all, Avant Auto Assist can diagnose the fault and get you moving again quickly.
Contact us today for fast roadside assistance across Wigan and the UK.