Transfer Case
The transfer case splits engine power between the front and rear axles in four-wheel-drive vehicles.
What is Transfer Case?
Part-time systems lock both axles together; full-time systems use a centre differential. Many include a low-range gear set for off-road use. It has its own oil. Many modern SUVs use an electronically controlled clutch instead of a classic transfer case, engaging the second axle only when needed. Transfer case oil is often forgotten but has its own change interval in many manuals.
How it works
Gears or a chain drive the second output to the other axle.
Why it matters for your car
Noise, leaks or trouble engaging 4WD indicate problems. Using part-time 4WD on dry pavement strains the system.
Other terms
- Agreed Value Insurance
- Anti-roll Bar
- Black Ice
- Brake Assist
- Cup Holder
- Electronic Brakeforce Distribution (EBD)
- Gas Strut (Gas Spring)
- GPS Navigation System
- Harmonic Balancer (Crankshaft Damper)
- Idle Relearn (Throttle Adaptation)
- Ignition Distributor
- Low Emission Zone (LEZ)
- Mechanic’s Creeper
- Rear-Wheel Drive (RWD)
- Refractometer (Coolant And AdBlue Tester)
- Scan Tool (Diagnostic Tool)
- Service Indicator Reset
- Snorkel (Raised Air Intake)
- Steel Wheels
- Vehicle Tax (Road Tax)