My key isn't working to open my door could the battery be dead?

Asked by Feb 05, 2013 at 03:57 PM about the 2001 Mercedes-Benz C-Class 4 Dr C320 Sedan

Question type: Maintenance & Repair

5 Answers

Check the battery voltage, it should be 13.5 V, kick the headlights on for a minute and see if this "load test" will be sufficient to crank it over.

1 out of 1 people think this is helpful.

...else throw a charger on it for eight to ten hours, I'll be expecting a full report, in the morning!

89,875

Check the battery in your remote control while you have your meter out.

125

THE KEY MIGHT HAVE LOST ITS CODING THAT CAN HAPPEN BUT CHECK BATTERY IN ROMOTE

2 out of 2 people think this is helpful.

you know modern car batteries will stop taking a charge ten percent per year....so check the "knock-off" labels on the top of your battery to see how old that it is...buy a new battery~

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