Just purchased a 1999 312 4X4. Some confusion over which of the possible 4X4 variants it is. (limited) Documentation suggests selectable 4X4 but dashboard switching suggests permanent 4X4 with centre and front diff locks. Not sure the 4x4 system is doing what it should be.
Qs:
1. Anyone able to check VIN for original spec?
2. Anyone have, or know where I can get (a copy of) the owners manual supplement for 4X4?
3. Ditto general owners manual
4. Workshop manual
I have just joined and read your message hope this reply is not too late. I purchased a copy of "Pocket Mechanic" by Peter Rusek for my Sprinter. Is not extensive and does not cover the 4X4 specificially but useful for general repairs and adjustments.
I am also looking for Owners and workshop manual for 4X4.
I would be interested in comparing notes on power, speed and fuel consumption.
Warren
its not perm 4x4 its 2-4wd the buttons on the dash are one for rear diff lock the other is to engage 4x4 this one has red led on it with a pic off a center diff although it dose not have one, its actully a pic off your trans box, do not use 4x4 on road or rear locker or trash gear box diff ect.
These sprinters are made with 3 types pf transfer box ZG1-ZG2-ZG3
ZG1 selectaqble 4x4 & rear diff lock
ZG2 Awd
ZG3 Selectable 4x4 ,Rear diff lock & reduction Gear
When The button is Pressed The Yellow light illuminates, (This is known as the request)
Once the 4x4, Diff Lock Or Reduction gear is engaged The red Light illuminates (known as feedback)
You can also change in the A63 control unit
The tire sizes,
How long the option selected stays on after ignition switch off
The speed at which the rear diff automaticlly switches off
The speed at which the 4x4 disengages
Having built several of these 4x4s I have encountered just about every fault and options, and have all infomation, including Wiring diagrams,Pneumatics,Parts,and our own Diagnostic system (as used by the dealers )
So I think the previous thread should be revised and updated so as not to mislead
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