Question about BMW K 1200 LT Motorcycles

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During one attempted start with charger hooked up the starter continued without let up.Now any time battery post is connected the immediately begins cranking. Is it a starter relay? if so where would it be physically located, and how difficult to change?

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I think most Beemers put the majority of the electrical gubbins in a big box, under the seat mebbes. Sorry, i've never worked on a BMW
4-cylinder m8 but i bet you'll find it there, easy to change when located.
My KLR650 did the same trick years back and 'twere the starter-relay.

Posted on Jun 17, 2009

  • axl3 Dec 01, 2010

    In the K series the relays are in a plastic box under the fuel tank, The starter relay is the biggest one in there, located at the back of the compartment. First try whacking it with a screwdriver handle, it is stuck closed, this may open it. (It's expensive to buy a new one so expedience is called for) Using an ohmmeter check for open/closed circuit between the 2 biggest wires (one from power the other to starter) If it shows open try reconnecting the battery.
    If the starter relay is functional the problem most usually arises from the kickstand switch which, if the wires are corroded shows a higher than normal voltage which causes the starter relay to stick. Clean the contacts. If this doesn't work there is a 2 hole jack on the right side of the bike, a test point. Try shorting it with a paper clip. (weird but the Germans do it)
    If all else fails consult the BMW forums online, people posting there have run across even odder problems.

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