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Next: Steering center tie-rod replacement
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External
Since: Feb 12, 2008
Posts: 1
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(Msg. 1) Posted: Tue Feb 12, 2008 7:43 pm
Post subject: 88' 528e brake light sensor
Archived from groups: alt>autos>bmw (more info?)
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1988 528e. When I turn the car on, the "check light"...(forward
panel) and the overhead "brake light" are on. Pressing the reset
button(overhead panel) or pressing the brake pedal extinguishes the
forward panel light but not the overhead light. I've checked all the
light connections in the trunk area, cleaned them, installed ALL new
bulbs....problem still exists. I bought the car with this problem.
I've already replaced the rotors, pads and brake sensors (they were
due) This is also an intermittent problem, more often than not.....
2) the cruise control only accelerates when pushing the cont
fwd...does not engage or maintain speed...not sure where to start but
was wondering if the brake problem is tied.......Nathan |
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External
Since: Oct 08, 2004
Posts: 94
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(Msg. 2) Posted: Tue Feb 12, 2008 10:37 pm
Post subject: Re: 88' 528e brake light sensor [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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<bussottiguitars.RemoveThis@yahoo.com> wrote in message
news:4359e024-0bc4-4f1d-b383-2c1ca26b4291@m34g2000hsf.googlegroups.com...
> 1988 528e. When I turn the car on, the "check light"...(forward
> panel) and the overhead "brake light" are on. Pressing the reset
> button(overhead panel) or pressing the brake pedal extinguishes the
> forward panel light but not the overhead light. I've checked all the
> light connections in the trunk area, cleaned them, installed ALL new
> bulbs....problem still exists. I bought the car with this problem.
> I've already replaced the rotors, pads and brake sensors (they were
> due) This is also an intermittent problem, more often than not.....
>
> 2) the cruise control only accelerates when pushing the cont
> fwd...does not engage or maintain speed...not sure where to start but
> was wondering if the brake problem is tied.......Nathan
-----
Try replacing the bulbs with the silver-base Osram bulbs. Sometimes the
brass-base bulbs trigger the brake check light due to higher resistance.
Alternately, check the brake bulb seats on the rear lights for
water/grease/anything conductive that might create a electrical path
bypassing the bulb. Don't forget the 3rd brake light in the rear window. I
use a reflective surface (window, another car, anything that the lights will
light up) to check the brake lights are all working when I'm in the car
stepping on the brake. Just fixed a similar problem on my '86 535i. There
was conductive grease in one of the brake light holders creating a path that
set off the brake check light.
Bill in Omaha
'86 535i |
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External
Since: Oct 08, 2004
Posts: 94
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(Msg. 3) Posted: Tue Feb 12, 2008 10:42 pm
Post subject: Re: 88' 528e brake light sensor [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Bill" <wechorba.DeleteThis@yahoo.com> wrote in message
news:Zsusj.33438$ov5.6355@newsfe15.phx...
>
> <bussottiguitars.DeleteThis@yahoo.com> wrote in message
> news:4359e024-0bc4-4f1d-b383-2c1ca26b4291@m34g2000hsf.googlegroups.com...
> > 1988 528e. When I turn the car on, the "check light"...(forward
> > panel) and the overhead "brake light" are on. Pressing the reset
> > button(overhead panel) or pressing the brake pedal extinguishes the
> > forward panel light but not the overhead light. I've checked all the
> > light connections in the trunk area, cleaned them, installed ALL new
> > bulbs....problem still exists. I bought the car with this problem.
> > I've already replaced the rotors, pads and brake sensors (they were
> > due) This is also an intermittent problem, more often than not.....
> >
> > 2) the cruise control only accelerates when pushing the cont
> > fwd...does not engage or maintain speed...not sure where to start but
> > was wondering if the brake problem is tied.......Nathan
> -----
>
> Try replacing the bulbs with the silver-base Osram bulbs. Sometimes the
> brass-base bulbs trigger the brake check light due to higher resistance.
> Alternately, check the brake bulb seats on the rear lights for
> water/grease/anything conductive that might create a electrical path
> bypassing the bulb. Don't forget the 3rd brake light in the rear window. I
> use a reflective surface (window, another car, anything that the lights
will
> light up) to check the brake lights are all working when I'm in the car
> stepping on the brake. Just fixed a similar problem on my '86 535i. There
> was conductive grease in one of the brake light holders creating a path
that
> set off the brake check light.
>
> Bill in Omaha
> '86 535i
>
P.S. The brake check light is ONLY triggered by the brake light electrical
system, not the brake hardware. It responds to the electrical
current/resistance in the brake light circuit. The brakes (master cylinder,
fluid, lines, pads, rotors, calipers, wear sensors) have no effect on the
overhead check light. >> Stay informed about: 88' 528e brake light sensor |
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External
Since: Mar 12, 2005
Posts: 352
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(Msg. 4) Posted: Wed Feb 13, 2008 8:55 am
Post subject: Re: 88' 528e brake light sensor [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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<bussottiguitars.RemoveThis@yahoo.com> wrote in message
news:4359e024-0bc4-4f1d-b383-2c1ca26b4291@m34g2000hsf.googlegroups.com...
> 1988 528e. When I turn the car on, the "check light"...(forward
> panel) and the overhead "brake light" are on. Pressing the reset
> button(overhead panel) or pressing the brake pedal extinguishes the
> forward panel light but not the overhead light. I've checked all the
> light connections in the trunk area, cleaned them, installed ALL new
> bulbs....problem still exists. I bought the car with this problem.
> I've already replaced the rotors, pads and brake sensors (they were
> due) This is also an intermittent problem, more often than not.....
>
> 2) the cruise control only accelerates when pushing the cont
> fwd...does not engage or maintain speed...not sure where to start but
> was wondering if the brake problem is tied.......Nathan
Depending on the model you have to press the brake pedal to reset the brake
light warning. (i.e. to do something which brings the lights on)
On newer models you can only start in Park and only select R or D by
pressing the brake pedal. >> Stay informed about: 88' 528e brake light sensor |
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External
Since: Feb 13, 2008
Posts: 6
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(Msg. 5) Posted: Wed Feb 13, 2008 12:49 pm
Post subject: Re: 88' 528e brake light sensor [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Feb 12, 11:37 pm, "Bill" <wecho....DeleteThis@yahoo.com> wrote:
> <bussottiguit....DeleteThis@yahoo.com> wrote in message
>
> news:4359e024-0bc4-4f1d-b383-2c1ca26b4291@m34g2000hsf.googlegroups.com...> 1988 528e. When I turn the car on, the "check light"...(forward
> > panel) and the overhead "brake light" are on. Pressing the reset
> > button(overhead panel) or pressing the brake pedal extinguishes the
> > forward panel light but not the overhead light. I've checked all the
> > light connections in the trunk area, cleaned them, installed ALL new
> > bulbs....problem still exists. I bought the car with this problem.
> > I've already replaced the rotors, pads and brake sensors (they were
> > due) This is also an intermittent problem, more often than not.....
>
> > 2) the cruise control only accelerates when pushing the cont
> > fwd...does not engage or maintain speed...not sure where to start but
> > was wondering if the brake problem is tied.......Nathan
>
> -----
>
> Try replacing the bulbs with the silver-base Osram bulbs. Sometimes the
> brass-base bulbs trigger the brake check light due to higher resistance.
> Alternately, check the brake bulb seats on the rear lights for
> water/grease/anything conductive that might create a electrical path
> bypassing the bulb. Don't forget the 3rd brake light in the rear window. I
> use a reflective surface (window, another car, anything that the lights will
> light up) to check the brake lights are all working when I'm in the car
> stepping on the brake. Just fixed a similar problem on my '86 535i. There
> was conductive grease in one of the brake light holders creating a path that
> set off the brake check light.
>
> Bill in Omaha
> '86 535i
I've replaced ALL the bulbs in the car from a bmw parts dealer with
OEM parts......and...as I said, I have already cleaned ALL the
connections, every last one of them, every light in the car...except
the interior......also, today, replaced the brake light
switch......problem still plagues me....... >> Stay informed about: 88' 528e brake light sensor |
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External
Since: Feb 13, 2008
Posts: 6
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(Msg. 6) Posted: Wed Feb 13, 2008 12:51 pm
Post subject: Re: 88' 528e brake light sensor [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Feb 13, 2:14 pm, "Bill" <wecho... DeleteThis @yahoo.com> wrote:
> "R. Mark Clayton" <nospamclay... DeleteThis @btinternet.com> wrote in messagenews:C82dnRspsKy-cC_anZ2dneKdnZydnZ2d@bt.com...
>
>
>
> > <bussottiguit... DeleteThis @yahoo.com> wrote in message
> >news:4359e024-0bc4-4f1d-b383-2c1ca26b4291@m34g2000hsf.googlegroups.com...
> > > 1988 528e. When I turn the car on, the "check light"...(forward
> > > panel) and the overhead "brake light" are on. Pressing the reset
> > > button(overhead panel) or pressing the brake pedal extinguishes the
> > > forward panel light but not the overhead light. I've checked all the
> > > light connections in the trunk area, cleaned them, installed ALL new
> > > bulbs....problem still exists. I bought the car with this problem.
> > > I've already replaced the rotors, pads and brake sensors (they were
> > > due) This is also an intermittent problem, more often than not.....
>
> > > 2) the cruise control only accelerates when pushing the cont
> > > fwd...does not engage or maintain speed...not sure where to start but
> > > was wondering if the brake problem is tied.......Nathan
>
> > Depending on the model you have to press the brake pedal to reset the
> brake
> > light warning. (i.e. to do something which brings the lights on)
>
> > On newer models you can only start in Park and only select R or D by
> > pressing the brake pedal.
>
> -----
>
> The overhead Check Light stays on until you initially depress the brake
> pedal or press the button on the overhead panel. Either depressing the brake
> pedal or the test button overhead tests the circuit and if ok, the light
> goes out.
>
> Bill in Omaha
no, it doesn't go out.........that's whats wrong........so, not
ok..........still looking, did the brake light switch today. I think
I'll take all my light parts off and put them on a new
beemer.......lol........ >> Stay informed about: 88' 528e brake light sensor |
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External
Since: Feb 08, 2008
Posts: 5
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(Msg. 7) Posted: Wed Feb 13, 2008 1:10 pm
Post subject: Re: 88' 528e brake light sensor [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Feb 12, 9:43 pm, bussottiguit....TakeThisOut@yahoo.com wrote:
> 1988 528e. When I turn the car on, the "check light"...(forward
> panel) and the overhead "brake light" are on. Pressing the reset
> button(overhead panel) or pressing the brake pedal extinguishes the
> forward panel light but not the overhead light. I've checked all the
> light connections in the trunk area, cleaned them, installed ALL new
> bulbs....problem still exists. I bought the car with this problem.
> I've already replaced the rotors, pads and brake sensors (they were
> due) This is also an intermittent problem, more often than not.....
If intermittent, it is almost surely a conductivity issue. And, as
has already been mentioned, it only relates to the brake lights. If
you know they're working, ignore the overhead light.
> 2) the cruise control only accelerates when pushing the cont
> fwd...does not engage or maintain speed...not sure where to start but
> was wondering if the brake problem is tied.......Nathan
Not likely. But as in your other thread, I will direct you to www.MyE28.com
for the best online support you will find for this car. No
affiliation aside from being their second biggest Post Whore. ;^)
--
C.R. Krieger
'87 535is >> Stay informed about: 88' 528e brake light sensor |
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External
Since: Oct 08, 2004
Posts: 94
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(Msg. 8) Posted: Wed Feb 13, 2008 1:14 pm
Post subject: Re: 88' 528e brake light sensor [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"R. Mark Clayton" <nospamclayton DeleteThis @btinternet.com> wrote in message
news:C82dnRspsKy-cC_anZ2dneKdnZydnZ2d@bt.com...
>
> <bussottiguitars DeleteThis @yahoo.com> wrote in message
> news:4359e024-0bc4-4f1d-b383-2c1ca26b4291@m34g2000hsf.googlegroups.com...
> > 1988 528e. When I turn the car on, the "check light"...(forward
> > panel) and the overhead "brake light" are on. Pressing the reset
> > button(overhead panel) or pressing the brake pedal extinguishes the
> > forward panel light but not the overhead light. I've checked all the
> > light connections in the trunk area, cleaned them, installed ALL new
> > bulbs....problem still exists. I bought the car with this problem.
> > I've already replaced the rotors, pads and brake sensors (they were
> > due) This is also an intermittent problem, more often than not.....
> >
> > 2) the cruise control only accelerates when pushing the cont
> > fwd...does not engage or maintain speed...not sure where to start but
> > was wondering if the brake problem is tied.......Nathan
>
> Depending on the model you have to press the brake pedal to reset the
brake
> light warning. (i.e. to do something which brings the lights on)
>
> On newer models you can only start in Park and only select R or D by
> pressing the brake pedal.
-----
The overhead Check Light stays on until you initially depress the brake
pedal or press the button on the overhead panel. Either depressing the brake
pedal or the test button overhead tests the circuit and if ok, the light
goes out.
Bill in Omaha >> Stay informed about: 88' 528e brake light sensor |
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External
Since: Oct 08, 2004
Posts: 94
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(Msg. 9) Posted: Wed Feb 13, 2008 2:56 pm
Post subject: Re: 88' 528e brake light sensor [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Nathan" <bussottiguitars RemoveThis @yahoo.com> wrote in message
news:2368fcda-f8fb-4ca9-86f0-20ad9311414f@y5g2000hsf.googlegroups.com...
> On Feb 12, 11:37 pm, "Bill" <wecho... RemoveThis @yahoo.com> wrote:
> > <bussottiguit... RemoveThis @yahoo.com> wrote in message
> >
> >
news:4359e024-0bc4-4f1d-b383-2c1ca26b4291@m34g2000hsf.googlegroups.com...>
1988 528e. When I turn the car on, the "check light"...(forward
> > > panel) and the overhead "brake light" are on. Pressing the reset
> > > button(overhead panel) or pressing the brake pedal extinguishes the
> > > forward panel light but not the overhead light. I've checked all the
> > > light connections in the trunk area, cleaned them, installed ALL new
> > > bulbs....problem still exists. I bought the car with this problem.
> > > I've already replaced the rotors, pads and brake sensors (they were
> > > due) This is also an intermittent problem, more often than not.....
> >
> > > 2) the cruise control only accelerates when pushing the cont
> > > fwd...does not engage or maintain speed...not sure where to start but
> > > was wondering if the brake problem is tied.......Nathan
> >
> > -----
> >
> > Try replacing the bulbs with the silver-base Osram bulbs. Sometimes the
> > brass-base bulbs trigger the brake check light due to higher resistance.
> > Alternately, check the brake bulb seats on the rear lights for
> > water/grease/anything conductive that might create a electrical path
> > bypassing the bulb. Don't forget the 3rd brake light in the rear window.
I
> > use a reflective surface (window, another car, anything that the lights
will
> > light up) to check the brake lights are all working when I'm in the car
> > stepping on the brake. Just fixed a similar problem on my '86 535i.
There
> > was conductive grease in one of the brake light holders creating a path
that
> > set off the brake check light.
> >
> > Bill in Omaha
> > '86 535i
>
> I've replaced ALL the bulbs in the car from a bmw parts dealer with
> OEM parts......and...as I said, I have already cleaned ALL the
> connections, every last one of them, every light in the car...except
> the interior......also, today, replaced the brake light
> switch......problem still plagues me.......
-----
So then the overhead light stays on regardless. I wonder if the check
circuit board in the overhead piece is faulty. Did you by chance check the
wiring harness connections for the lights in the trunk? Mine were slightly
corroded. They are under the fabric/cardboard piece adjacent to the
taillights. If the check board is good, then somewhere a high resistance is
being created, maybe corrosion.
Bill in Omaha >> Stay informed about: 88' 528e brake light sensor |
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External
Since: Aug 24, 2005
Posts: 225
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(Msg. 10) Posted: Wed Feb 13, 2008 4:27 pm
Post subject: Re: 88' 528e brake light sensor [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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=?ISO-8859-1?Q?E28_Guy=A9?= <88.535is.TakeThisOut@gmail.com> wrote:
>On Feb 12, 9:43 pm, bussottiguit....TakeThisOut@yahoo.com wrote:
>> 1988 528e. When I turn the car on, the "check light"...(forward
>> panel) and the overhead "brake light" are on. Pressing the reset
>> button(overhead panel) or pressing the brake pedal extinguishes the
>> forward panel light but not the overhead light. I've checked all the
>> light connections in the trunk area, cleaned them, installed ALL new
>> bulbs....problem still exists. I bought the car with this problem.
>> I've already replaced the rotors, pads and brake sensors (they were
>> due) This is also an intermittent problem, more often than not.....
>
>If intermittent, it is almost surely a conductivity issue. And, as
>has already been mentioned, it only relates to the brake lights. If
>you know they're working, ignore the overhead light.
The contact plates that hold the lamp sockets should be carefully cleaned
and dielectric grease put on them. Likewise the sockets should have grease
in them.
If this does nothing, then it's time to open up the black box in the
trunk. You will find is full of reed relays, and either the relay contacts
are bad (and the reed can be replaced) or there are cold solder joints.
It takes only a TINY change in current to set these things off.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis." >> Stay informed about: 88' 528e brake light sensor |
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