Mechanical Services
4WD & AWD Service and Repairs in Mascot, Sydney
Transfer cases, differentials, driveline and CV joints on all-wheel-drive and four-wheel-drive vehicles.
All-wheel-drive and four-wheel-drive vehicles have driveline components that a normal car simply does not — transfer cases, additional differentials, extra driveshafts and couplings. Each has its own oil, its own service requirements, and its own failure modes.
These are also the components most often skipped. Transfer case and differential oils are frequently left out of budget servicing because they add cost and are easy to overlook, and the consequences do not appear for years — by which time the damage is done and the repair is substantial.
AWD systems are particularly unforgiving about tyres. If the rolling diameters differ significantly between axles — mismatched tyres, or one new pair fitted to worn ones — the centre differential or coupling is forced to slip continuously, and that generates heat and wear that will eventually destroy it.
What's included
- Transfer case service and oil replacement
- Front and rear differential service and repair
- Driveshaft, tailshaft and universal joint replacement
- CV joint and boot replacement
- AWD coupling and viscous unit diagnosis
- Full logbook servicing for AWD and 4WD vehicles
Signs you need this looked at
- • Whining, humming or droning that changes with speed
- • Clunking when taking up drive or changing direction
- • Vibration through the floor at highway speed
- • Binding or juddering during tight low-speed turns
- • Oil leaks around the diff or transfer case
4WD & AWD Service — common questions
How often should diff and transfer case oils be changed? +
Typically every 40,000km to 60,000km, though it varies by manufacturer and is shorter for towing or heavy use. Check your logbook. These are commonly skipped in budget servicing, and the resulting damage is expensive and entirely avoidable.
Do I need to replace all four tyres on an AWD? +
Usually yes, and it matters more than most people realise. AWD systems are sensitive to differences in rolling diameter between axles — mismatched tyres force the centre differential or coupling to slip constantly, which generates heat and can destroy it. Check your handbook, as some makes are stricter than others.
What does binding during tight turns mean? +
A juddering or binding sensation during slow, tight turns usually points to a driveline problem — commonly a centre differential or coupling fault, or mismatched tyres forcing wind-up. Have it diagnosed before it becomes a transfer case rebuild.
Can you service my 4WD without voiding the warranty? +
Yes. Under Australian consumer law you are free to have a new vehicle serviced by any qualified workshop without affecting the manufacturer warranty, provided the correct schedule, parts and specifications are followed. We stamp your logbook and use manufacturer-specification parts and fluids.
Book your car in with Mascot’s trusted auto specialists
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