Why does the keyless entry o r remote locking system sometimes fail o r delay in Mercedes-Benz E-Class vehicles in Pakistan?

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Why does the keyless entry o r remote locking system sometimes fail o r delay in Mercedes-Benz E-Class vehicles in Pakistan?

There have been cases where the keyless entry o r remote locking system in E-Class cars does not respond immediately o r occasionally fails to lock/unlock the car doors. Could this be due to interference from local signals, battery issues, o r system faults? What troubleshooting steps o r solutions are advisable to ensure consistent and reliable operation?

Talha Kyanii asked on 11 Oct 2025 12:21:15 pm

1 Answer

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Gari Master - on 11 Oct 2025 12:22:12 pm

Common reasons for keyless entry issues include:

Weak o r Dead Key Fob Battery: The most frequent cause replacing the battery usually resolves the problem.

Interference: High radio frequency interference in urban areas can disrupt signal transmission between the key fob and the car.

Faulty Antenna o r Receiver Module: If the car’s antenna that receives the signal is damaged o r malfunctioning, it can cause delays o r failures.

Software Glitches: Sometimes, the car’s control module may need a software update o r reset.

Advice:

Replace key fob batteries regularly, ideally every 1-2 years.

Avoid storing the key fob near other electronic devices that cause interference.

Visit an authorized Mercedes-Benz service center to check antenna o r control module health.

Keep the car’s software up to date for optimal performance.