Service Information: Wax preservation on terminal block circuit 30 (X4/37)

 When working on terminal block circuit 30 X4/37, it is important to note the following:

Wax sealant is applied to terminal X4/37 during vehicle assembly. When the terminal nut or cables are removed, the wax sealant is broken. This subjects the power terminal to possible corrosion.

 Corrosion buildup on terminal X4/37 can cause intermittent power connection, resulting in conditions of engine no-start, radio power interrupt, and malfunction indicator light flicker.

Therefore, wax sealant MUST be reapplied whenever the nut or cables are removed from terminal X4/37.

Auxiliary repair materials