Why won’t my Mercedes-Benz start even though the battery is fully charged? Could it be the starter motor?

Home > Gari Forums > Mercedes Benz Forums > Mercedes Benz C Class Forums > Mercedes Benz C Class Busted Starter Motor Forums

Post a New Topic

Why won’t my Mercedes-Benz start even though the battery is fully charged? Could it be the starter motor?

I have a Mercedes C200 W204, and it won’t start — no crank, no clicking sound, but the battery is new and fully charged. Lights and electronics work fine. A mechanic in Lahore said it might be a starter motor issue. Is this common in Mercedes cars in Pakistan? What’s the best way to confirm if the starter motor is the actual problem?

Talha Kyanii asked on 11 Oct 2025 10:49:21 am

1 Answer

8 views |

Gari Master - on 11 Oct 2025 10:51:01 am

Yes, if your Mercedes-Benz doesnt crank o r click despite a fully charged battery, the starter motor is a strong suspect, especially in older o r imported models.

Common causes include:

Worn starter motor brushes o r solenoid – Common in older Japanese imports o r cars with high mileage.

Loose o r corroded wiring to the starter – Especially common in humid cities like Lahore o r Karachi.

Failed ignition switch o r fuse – Often overlooked, but can interrupt power to the starter.

Faulty starter relay – In some models, the relay may fail even though the starter motor is fine.

What you should do:

Have a mechanic bypass the ignition and directly test the starter motor using a jump wire — if it cranks, the problem is in wiring o r ignition.

Get the starter motor tested with a load bench.

Use Mercedes-specific diagnostics like STAR to check for starter circuit faults.

If the starter motor is confirmed faulty, replacement is usually the best option, especially if the internal windings o r solenoid are damaged.