BMW E36 Check Control fault messages
Why does the E36 show Tail Light Failure even though the bulbs are fine?
A common cause is an oxidised rear fog light socket with poor contact, even if the bulb seems to work. The oxidation is removed with contact cleaner; scratching with a sharp tool only ruins the contact surfaces. The fault can be in one socket even though the same bulb works in another.
Can the light switch backlight bulb cause a Check Control message?
Yes. The small backlight bulb behind the headlight switch (0.36 W, part number 61138360844) can burn out and cause an error message. It is replaced by unscrewing the light switch and pulling it outwards.
What other Check Control messages are there and where is the module?
The message Number plate light fail means a blown number plate light. If a light message appears even though both lights are on, the fault may be in the Check Control module itself; xenon lights have damaged it. The module is on the driver's side under the dashboard.