CLK55 wont start wont turn over but all lights come on

Asked by Apr 10, 2017 at 09:36 AM about the 2004 Mercedes-Benz CLK-Class CLK 55 AMG Cabriolet

Question type: Maintenance & Repair

Car wont turn over dash and asll lights come on but nothing when I turn the key

3 Answers

345

Have you considered the possibility of it being a dead battery? Just sayin'

495

Possibility # 1 is dead battery.

17,875

Your system requires a near or fully charged battery to turn the starter as it takes a ton of amps. If you have a bad cell that will not hold a charge, you can't turn over the engine and the computer will not allow it. You have enough power to run the lights, locks windows and even the radio. If you can jump start it, and your amy shows a charge going into the battery, it just mayday be a bat battery. Have the battery tested before replacement. It could be a voltage regulator, or even corrosion on connections not allowing a charge to go into the battery. Unless you have the proper tools and skill set, it can be a bit tricky. Dealer or good honest repair shop. Even PepBoys can test a battery free of (charge) if you can take it to them. Be aware of batteries. Those made in China or even Mexico have a large failure rate. Pay to extra money. I just replaced my battery in my corvette and got a full replacement 5 year warranty. My mechanic told me to mark my calendar for 4 1/2 years after the insulation and bring in the battery for another new one. No questions asked on the warranty. Money well spent to eliminate headaches.

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