Brake lights come on when light switch is turned on and stay on until lights turned off again. Brake lights work fine when lights are turned off. It's not brake light switch if brake lights work fine without touching the light switch. Any ideas?
bigfatmat1,
Jul 10, 5:03am
Faulty brake light bulb replace all bulbs is prob easiest.
pete_iam,
Jul 10, 5:04am
Nice troll
pete_iam,
Jul 10, 5:04am
Highstop is LED. Not a bulb issue
pete_iam,
Jul 10, 5:06am
Like I mentioned brake lights work perfect if you don't have headlights turned on
bigfatmat1,
Jul 10, 5:13am
not a troll you have a faulty bulb.
pete_iam,
Jul 10, 5:16am
Ok then I will check them my apologies in advance if you are correct
bigfatmat1,
Jul 10, 5:20am
unless you know what you are specifically looking at REPLACE the bulbs one by one and see which one fixes your issue. The bulbs have two filaments inside what happens is one filament blows and contacts the other circuit. Can be hard to visually see to untrained eye. If its not a bulb come back and we will discuss further problems that can cause this issue. But the bulbs is the most common cause of this fault.
gph1961,
Jul 10, 5:23am
yup,have had that myself
ml6989,
Jul 10, 5:26am
Many moons ago I had a similar problem on a customers vehicle. The out come was the park lamp filament had blown in a tail lamp and had fallen across the brake lamp filament, so turning on the park lamps effectively powered up the brake lamps. I cant remember, but I think I dropped to it after noticing the dash lamps lighting up when the brake pedal was pushed. I assume it is not all LED lamps because if it is then this diagnosis will not fit the problem.
ml6989,
Jul 10, 5:28am
# 8 is on the same track as me, just 6 minutes earlier. Maybe I need to type faster!
bigfatmat1,
Jul 10, 5:31am
i checked before i posted all the ones I found on Google were bulb lamps
saxman99,
Jul 10, 6:54am
If bulbs check out OK then check the taillight clusters have a decent earth.
pete_iam,
Jul 10, 8:43am
Was the rh bulb. Car had no lights out but the problem went away with a new bulb. Haven't driven it so far but the ESC light always came on when the lights got turned on. Hoping this is solved too!
bigfatmat1,
Jul 10, 6:37pm
i would say it will as it prob thinks there is a switch fault. Brakes activated no brake pressure
intrade,
Jul 10, 10:26pm
bf mat works as automotive tech including EV
vernunft,
Jul 11, 5:36am
. one of the many longtime listeners.
gph1961,
Jul 11, 5:14pm
classic
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