BMW K bikes (Bricks)

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mook

mook
Silver member
Silver member
Hi,

strange thing happeneing. My bike is trying to start without the key in/kill switch on.
I tried to start it yesterday mornnig, but it struggled and when I took the key out it just kept turning over.

battery now dead, when I connect to jump start it is starts turning over again, without key in.

no idea where to start on this one.

any takers?
thanks!

    

Two Wheels Better

Two Wheels Better
Moderator
Moderator
The load shed relay (aka starter relay) has 'welded' itself together....low battery voltage. New relay and a charged or replaced battery will fix it.


__________________________________________________

1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-P  - Beemers owned still or sold.

~We all believe what we want to believe in - Rob Dickinson
    

mook

mook
Silver member
Silver member
thanks.

found this
http://k100rt.aforumfree.com/t3495-starter-motor-keeps-running#34071

Relays are under the fuel tank right?
do it require fuel tank removal to replace relay?

    

Inge K.

Inge K.
VIP
VIP
Check post 2,3,4, again in the thread you found.

If you don`t have the same luck as Ross, check this thread.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

mook

mook
Silver member
Silver member
Thanks all.
Starter Relay removed. Replacement on its way.
Need to charge/replace battery next.

    

mook

mook
Silver member
Silver member
well, I've got this fixed now.
new battery went in on Saturday to finish this job.
thanks all!

    

charlie99

charlie99
VIP
VIP
the starter relay weld ...is .....just reminding you ..".i want to get out for a ride" .....grin


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OK100 trying to start itself...with key out!!! Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

mook

mook
Silver member
Silver member
sorry... replaced the relay last week, was just waiting for the battery...

    

K100LT Notts

K100LT Notts
Silver member
Silver member
I had the same problem a few years ago- Starter relay welded and flat battery. To stop the churn I had to disconnect the battery. However I added to the problem by jump starting the bike from my car.

As I had ABS it blew the ABS control unit (in tail area) as the early ones were not surge protected. This is a potentially very expensive (Approx £1,000 for new one) mistake. DO NOT JUMP START A FLAT K100 with ABS!

My friendly repairman replaced relay and battery. It is not immediately required to replace ABS control unit as brakes will still work (without ABS). To pass the UK MOT just cover over the ABS light with black tape instrument panel as MOT does not require ABS to be working, but it must not show the fault light! Eventually I bought a used control box on ebay for £150 from a bike being broken for spares. It plugged in and has worked fine ever since. The alternative long term solution is just to remove the ABS system.

To avoid these problems in future I have bought an "intelligent" battery charger and leave it connected when the bike is not used for a long time. (Battery appears to drain about 1% per day so 2 months only 40% left). Alternatively charge the battery at least monthly and leave it disconnected between charges.

    

blaKey

avatar
Life time member
Life time member
£150? Bargain!
Mine's on a trickle/maintenance charger as well. They work a treat!
Welcome to the forum CM.


__________________________________________________
Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

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