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I have a 2001 Mercedes E430. I'm having problems getting it to start. Usually, I have to get a boost to get it to start. But I just discovered that disconnecting the battery completely gets it to start as well. After disconnecting the battery it will run fine for a few days. Also, I hear a single click sometimes when it doesn't start.

Also, may be related, my windows usually have problems going up. They will go up a little then stop. And I have to repeatedly push the up button. I noticed after disconnecting the battery this time, I did not have that problem.

  • It sounds as if you have a connection problem at the battery, where you get it to reconnect after you take the leads off the posts. Try cleaning the posts and clamps completely, then reconnect them, putting grease on the outside of the clamps. Ensure the clamps are tight after cleaning and before greasing. – Pᴀᴜʟsᴛᴇʀ2 Mar 22 '18 at 21:16
  • @Pᴀᴜʟsᴛᴇʀ2 Everything is clean and the battery is fine, it's new(few months old) and fully charged. Just had it tested at AutoZone. – Antarr Byrd Mar 22 '18 at 21:20
  • Notice, I didn't say the battery is bad. I said the battery connection is not good. Your car is exhibiting classic symptoms of this (from your description). It can look clean without making the connection. Clean them so they are shiney, then reconnect tightly. – Pᴀᴜʟsᴛᴇʀ2 Mar 22 '18 at 21:38
  • @Pᴀᴜʟsᴛᴇʀ2 What kind of grease do you suggest? – Antarr Byrd Mar 22 '18 at 21:42
  • Like bearing grease. I wouldn't do it until you are sure this has fixed your issue, though. Cleaning it off becomes a chore in between trying to make things work. Check both ends of your cables, too. Could be a bad ground or a bad connection to the starter. – Pᴀᴜʟsᴛᴇʀ2 Mar 22 '18 at 21:58

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