Short answer: before heading up the Oodnadatta Track or across the Simpson Desert, check the latest Desert Parks Bulletin and DIT's Outback Road Warnings, buy a Desert Parks Pass if you are entering Munga-Thirri–Simpson Desert National Park or going east of Dalhousie Springs, and remember the Simpson closes from 1 December to 15 March every year. Then set the vehicle up for weight, fuel range, dust, water, power and communications, and weigh it fully loaded before you leave.
Gawler is a natural jumping-off point for trips north into the Flinders and beyond, and a lot of the touring builds that come through our workshop are heading this way. This is the checklist we'd work through.
1. Permits, closures and park rules
- Desert Parks Pass: mandatory for Munga-Thirri–Simpson Desert National Park and for travel east of Dalhousie Springs in Witjira National Park. It covers 12 months of vehicle entry to seven desert parks and camping for up to 21 nights at a time (no camping at Wabma Kadarbu Mound Springs Conservation Park). Buy it from National Parks and Wildlife Service SA.
- Summer closure: the Simpson Desert parks in SA and Queensland close from 1 December to 15 March each year. With October already here, the window for a crossing this season is closing.
- Fire danger: the park closes on catastrophic fire danger days and may close on extreme fire danger days.
- Safety flag: vehicles in the Simpson must have a high-visibility safety flag attached to the front.
- Speed: a 40 km/h limit applies within the parks.
2. Road and track conditions
Conditions change quickly after rain. The Desert Parks Bulletin dated 1 September 2026 listed some public access routes closed, Innamincka Regional Reserve and Malkumba–Coongie Lakes National Park closed after flooding, and warned that water across tracks had caused electrical faults in a number of vehicles. That is a snapshot, not a forecast, so check the current bulletin before you go.
- For public roads outside the parks, including the Oodnadatta Track, check DIT's Outback Road Warnings or call the Transport SA Road Condition Hotline on 1300 361 033.
- Don't drive through ponded water, and don't drive off track or around closure markers.
- No access is permitted onto the surface of Kati Thanda-Lake Eyre; it can be seen from the viewing area on the Oodnadatta Track.
3. Vehicle prep: what we'd look at first
Weight
Desert trips are heavy: extra water, fuel, food, recovery gear, a fridge and often a camper. Weigh the vehicle fully loaded before you leave and compare it with its GVM. Our guide to GVM, GCM and tow ball mass shows how, and a GVM upgrade is the legal fix if you are over.
Suspension
Factory suspension is built for an empty vehicle on sealed roads. A loaded 4WD on corrugations is a different job, and an upgraded suspension setup restores ride height, carries the load and cuts body roll.
Fuel range
Plan fuel stops with a margin for detours, soft sand and headwinds, and confirm opening hours before you rely on a remote fuel stop. A long range fuel tank adds capacity without strapping jerry cans to the roof.
Dust and water
A snorkel raises the air intake to roof height and draws cleaner air from above the dust cloud, which matters on corrugated outback roads and when you are following other vehicles.
Power for the fridge and camp
A properly designed dual battery system with DC-DC charging and solar keeps the fridge running between drives. Our dual battery systems explained post compares REDARC, Enerdrive and Victron, and the dual battery systems page covers the basics.
Tyres and recovery
Lower tyre pressures in soft and narrow sandy sections, as the Desert Parks Bulletin advises, and carry a gauge and compressor to air back up. If you do get bogged in sand, the bulletin's advice is to make sure 4WD and hubs are engaged, tyre pressures are down and sand is cleared from in front of the tyres before you try to drive out.
Communications and safety
- Carry an HF radio or satellite phone, plus an EPIRB or PLB.
- Tell a responsible person your plans before travelling into remote areas, and seek local advice.
- Take extra water, food and fuel. Outback daytime temperatures can reach the high 40s.
- If you get stuck, stay with the vehicle. Walking for help can be fatal.
- Dingoes are about. Don't feed them.
Quick pre-departure checklist
| Item | Area |
|---|---|
| Desert Parks Pass bought (if needed) | Permits |
| Latest Desert Parks Bulletin and DIT Outback Road Warnings checked | Conditions |
| Front-mounted high-visibility flag fitted (Simpson) | Park rules |
| Vehicle weighed loaded, under GVM (and GCM if towing) | Weight |
| Suspension, tyres and spare checked; gauge and compressor packed | Vehicle |
| Fuel range planned with a margin | Fuel |
| Dual battery, fridge and solar tested at home | Power |
| HF radio or sat phone, EPIRB or PLB packed; trip plan left with someone | Safety |
| Extra water, food and fuel on board | Supplies |
Frequently asked questions
When is the Simpson Desert closed?
Munga-Thirri–Simpson Desert National Park closes from 1 December to 15 March every year because of extreme heat. It can also close on days of catastrophic fire danger, may close on extreme fire danger days, and access can be restricted by road conditions.
Do I need a Desert Parks Pass?
Yes if you are entering Munga-Thirri–Simpson Desert National Park or travelling east of Dalhousie Springs in Witjira National Park. The pass gives 12 months of vehicle entry to seven desert parks and lets you camp for up to 21 nights at a time. Day entry and camping options are available for the other desert parks.
Do I need a flag to cross the Simpson?
Yes. National Parks and Wildlife Service SA says vehicles in Munga-Thirri–Simpson Desert National Park must have a high-visibility safety flag attached to the front of the vehicle.
Where do I check outback road conditions in SA?
Check DIT's Outback Road Warnings online or call the Transport SA Road Condition Hotline on 1300 361 033. Inside national parks, check the latest Desert Parks Bulletin.
What should I do if I get stuck?
Stay with your vehicle. National Parks and Wildlife Service SA warns that leaving your vehicle to walk for help can be fatal. Carry an HF radio or satellite phone plus an EPIRB or PLB, and tell someone your plans before you go.
Getting the rig ready for the outback?
Tell us where you're heading and what you're driving. We'll quote suspension, GVM, long range tanks, snorkels, dual battery systems and canopies, and fit them at our Gawler South workshop before you go.
Get a QuoteCall 0481 569 90734 Adelaide Road, Gawler South SA 5118 · Mon to Fri 9am to 5pm, Sat 10am to 2pm
Sources
- Munga-Thirri–Simpson Desert National Park, National Parks and Wildlife Service SA
- Desert Parks Bulletin, National Parks and Wildlife Service SA
- Desert Parks Pass, National Parks and Wildlife Service SA
- Outback Road Warnings, Department for Infrastructure and Transport SA
General information only, current as at 5 October 2026. Closures and track conditions change often; always check the official sources above before you travel.