Why is my Jeep Cherokee showing a battery warning light even after replacing the battery? Detail:

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Why is my Jeep Cherokee showing a battery warning light even after replacing the battery? Detail:

I own a 2015 Jeep Cherokee and recently replaced the battery after it kept dying. However, the battery warning light still appears on the dashboard. The car starts fine sometimes but struggles at other times. A local mechanic in Rawalpindi mentioned the alternator might be weak. How can I confirm if the alternator is the real issue, and is it common for alternators to fail in Pakistan’s climate?

Talha Kyanii asked on 15 Oct 2025 15:13:24 pm

2 Answers

11 views |

Gari Master - on 15 Oct 2025 15:15:21 pm

If you’ve replaced the battery but the battery warning light still shows, it likely points to a charging system issue, most commonly the alternator. In this case, the alternator might not be charging the battery properly, even though the battery itself is new.

🔍 How to Confirm Alternator Failure:

Here are steps you or your mechanic can take to verify if the alternator is the problem:

Voltage Test with Engine Running:

Use a multimeter to check the battery voltage.

With the engine off, the voltage should be around 12.6V.

With the engine running, it should be between 13.8V and 14.5V.

If it remains close to 12V while running, the alternator is not charging properly.

Listen for Alternator Noise:

A failing alternator may make whining o r grinding noises, especially under electrical load.

Dashboard Symptoms:

Dim o r flickering lights.

Radio o r infotainment resets.

Transmission shifting oddly in some Cherokees with electronic control.

Sudden stalling while driving.

OBD-II Scan:

Some alternator o r charging faults are recorded by the ECU. A scanner may show codes like P0562 low system voltage o r P0625 generator field circuit low.