BMW K bikes (Bricks)

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1Back to top Go down   Red idiot light on all time Empty Red idiot light on all time on Wed Oct 23, 2019 5:45 pm

jon12a

jon12a
New member
New member
Just today had a k100rs delivered and it has a red warning light constantly on ( a warning triangle lit up).
Thought bulb out warning ? not sure  as no bulbs seem to be out .
Its the one above the Neutral light.
As yet I have no manual so asking for your help.

Cheers In advance of any help. 
John

    

2Back to top Go down   Red idiot light on all time Empty Re: Red idiot light on all time on Wed Oct 23, 2019 6:28 pm

MartinW

MartinW
Life time member
Life time member
For the light to go out the front and rear brake needs to be activated. If you have a faulty brake switch front or rear the light will not go out.
Regards Martin.


__________________________________________________
K75s Hybrid
    

3Back to top Go down   Red idiot light on all time Empty Re: Red idiot light on all time on Wed Oct 23, 2019 6:33 pm

92KK 84WW Olaf

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Life time member
Check 

1: Check the front brake activates the brake light. If not, suspect the front brake switch is faulty.
2: Check the rear brake activates the brake light. If not, suspect the rear brake switch is faulty.
3: If one works and the other does not, the non working one needs a new brake switch. Not expensive.
4: If both work, take out rear light and clean the bulbs, bulb holders and contacts. There are two knurled nuts inside the rear cowl that you unscrew by hand to get the rear light off.
5: If neither work check the rear brake lights up with a separate live wire.
6: If that works you likely have 2 faulty switches. Before anyone says you won't find that, thats exactly what happened my RS when I got it. Both switches died at the same time.

The red warning needs both front and rear brake switches working to test the circuits to get the light to go out. If one is faulty it won't go out.

There is also one on your clutch lever linked to the ignition system, you need it working so that you can start the bike with the clutch lever pulled in. Otherwise you need the green neutral light on.

Also can you put in model year, RS had lots of changes going from early 2v to later 16v engine but the above will apply to either.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles.
    

4Back to top Go down   Red idiot light on all time Empty Re: Red idiot light on all time on Wed Oct 23, 2019 6:38 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
Does the bike have LED tail light or brake light bulbs?  If everything works properly that may be the problem.  LED's look like bad bulbs to the bulb monitoring unit or BMU.


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

5Back to top Go down   Red idiot light on all time Empty Re: Red idiot light on all time on Wed Oct 23, 2019 7:05 pm

92KK 84WW Olaf

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Life time member
Life time member
@Point-Seven-five wrote:Does the bike have LED tail light or brake light bulbs?  If everything works properly that may be the problem.  LED's look like bad bulbs to the bulb monitoring unit or BMU.

Forgot that one...... Smile


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles.
    

6Back to top Go down   Red idiot light on all time Empty Re: Red idiot light on all time on Thu Oct 24, 2019 12:22 pm

Holister

Holister
Life time member
Life time member
It could be simply that the OP has not activated both brake levers.

Another possibility is that there's a short.


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  Red idiot light on all time Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

7Back to top Go down   Red idiot light on all time Empty Thanks guys on Thu Oct 24, 2019 2:27 pm

jon12a

jon12a
New member
New member
Thank you for your help guys
I'm not with the bike at the moment but will try those solutions out when i get back from Holiday,
The bike is a 1992 abs model.

Cheers John

    

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