nvrlft

I recently lost functionality of my turn signal relay. This is the third relay to fail during my 4 years of ownership so it got me thinking about the Life Cycle Management of relays. I plan on replacing the following and then updating them every 3 years. Any important ones that I am missing?

• 964 615 135 00 - Hydraulic Pump - C4 only/front fuse box - Hydraulic pump will hang open, overheat, and melt
• 928 615 124 01 - ABS System - front fuse box - ABS System will not work
• 993 615 227 00 - Fuel/DME - front fuse box - Car will not start
• 1H0-953-227-M5206 - Turn Signal - Center tunnel - Turn signals inoperable, fuses check out ok

Please update list with part number and location

Laker

* 928-618-521-03 - Heated Seat Relay (2) - 1 under each seat * Heated seats only work if you hold seat rocker switch up. ($185 each)


- "Important" if you own a cab in a colder climates.


IMHO, replacing "important" relays every three years is expensive and not needed. Carrying spares is however very wise as the lead times from Germany can be weeks.

nvrlft

Understand and agree...however....that hydraulic pump is freakin' expensive! Just sayin...