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El Mercedes-Benz W126 es una serie de automóviles S-Class fabricados por Mercedes-Benz entre 1979 y 1992. Estrenada en septiembre de 1979 como el sucesor de la línea W116, el W126 fue la segunda generación en llevar oficialmente esa prestigiosa designación, una abreviatura para el alemán Sonderklasse o "clase especial".

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Can I fix keyfob with conductive glue

Have a keyfob that's not working. The 'open door' does not work. Close door and trunk buttons work.

Compared it to spare fob, and noticed two instances where tiny copper/gold plate circles were missing on the pcb board. Tested for continuity and failed. Good fob had continuity.

Wondering if carefully adding a drop of conductive glue in both areas would be a fix.

Photo has two arrows noting areas in question. The circled area represents the plate cover that exists on those two areas, on the good fob…(which are missing here)

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**Answering for completion**

This keyfob is not repairable - there’s too much damage as the traces are physically damaged. You’ll need to get a new one.

Since you have a spare keyfob that’s 100% intact, you may be able to use it as a way to program the replacement. That said, if you do not have it then you need to have it done by a locksmith, or a dealer. You’ll need to know the model and year (chassis code helps too - think W204, for example) to find the steps to do this, as I do not know and I know the W126 is too old for a keyfob - this is at least a W2, C2 or R2 keyfob. For example this was used from the W202-W205, and various other models.

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Carl estará eternamente agradecido.
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