I use a battery-tender 24/7 to keep battery charged but after driving 25-30 miles it will not start if turned off.

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The battery has been replaced twice. I run it while parked until it reaches 180 operational temp. on days it isn't driven. Yet it will not start w/o the Battery Tender being connected. All diagnostic checks are alright. The front right fender(battery side) was damaged & repaired.

MAY64 in Nashville TN

Mar 25, 2016

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What is your question?

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I use a battery-tender 24/7 to keep battery charged but after driving 25-30 miles it will not start if turned off.

What is your question?

MAY64 in Nashville TN

Mar 25, 2016

1 Reply

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ziptie12on Mar 27, 2016

NO , ALL diagnostic checks are not alright. Have a QUALIFIED MB tech perform a 'parasitic draw' test. Also , stop using the battery tender , let the battery run- down and have it tested for a 'bad cell'. Make sure , whoever you have doing the electrical tests is told about ANY body work that has been done. What made you start using the 'battery tender' and was that just shortly AFTER the body work you mentioned?

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Popular Answer

What are the best Mercedes-Benz repair shops?

RepairPal Certified shops can diagnose and repair your 2002 Mercedes-Benz SLK230. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.