93 - 05 Aero - 'Right Brake Lamp Failure'

[John D9395]

Hi

Bit of a strange on.

The SID is displaying 'Right Brake Lamp Failure' every time the car starts, yet all, including the rear right brake lamps are working.

Any idea's as to the potential cause of this?

I have considered changing the lamp to see if the alarm goes away, but on the basis that the lamp is working how could that cause the problem?

Any help appreciated.

Thanks

John

[loko]

Have you actually checked to see if the bulb has blown, the saab system compensates for a brake light failure by illuminating the tail light so it would look like the bulb is still working but it will be tail light coming on, works vice versa, if a tail lamp blows it will dimly light the brake light

[John D9395]

Hi

Wasn't aware of that feature, will check it out when I get home tonight.

[philmh]

Mine did this, 54 9-3 aero. Turns out the bulb still worked but blew shory after. Stick a couple of new bulbs in for the sake of a couple of quid.

[John D9395]

Thanks Loko, good advice.

Left hand side was illuminating as the brake light, right hand side was illuminating the inner red light to compensate.

Very clever, didn't realise it did that.

80p, and all sorted, many thanks!

[Dr Doofenshmirtz]

loko said:

Have you actually checked to see if the bulb has blown, the saab system compensates for a brake light failure by illuminating the tail light so it would look like the bulb is still working but it will be tail light coming on, works vice versa, if a tail lamp blows it will dimly light the brake light

Didn't know that - clever stuff!

[loko]

Glad to be of help