brake light failure signal lamp

[jakesappliances]

dash f ailure lamp comes on ,ive changed lamp with known working one but offside brake light does not work,any ideas much appreciated.ive check wiring loom !and can hear a relay clicking beside spare wheel(e300td)

 

[Dieselman]

Check the lamp holders and the lamp unit electrical contacts. There was an issue with the contacts being poor and melting the plastic so making things worse.
Early units use white holders, later ones pink.

The relay sounds like a towing relay has been added, that could be the fault.

 

[bigstuff]

i had the same prob it was the holder as said above