> ## Documentation Index
> Fetch the complete documentation index at: https://docs.czautoz.co.uk/llms.txt
> Use this file to discover all available pages before exploring further.

# Common Issues

> Troubleshooting CZ Autoz / Callatic vehicles — engines not starting, lights, parts and mod load order.

<AccordionGroup>
  <Accordion title="The vehicle spawns but the engine won't start" icon="key">
    This is almost always **whitelisting**. On a non-whitelisted server the vehicles spawn and persist but the engine is disabled by design.

    1. Open the dated whitelist log `$profile:\CZAutoz_Whitelist_YYYY-MM-DD.log` on your server and look for the vehicle's line — it will say `NOT WHITELISTED` with a reason.
    2. If it says your **IP isn't registered**, whitelist it in [#ip-whitelisting](/vehicles/whitelisting).
    3. If it says **port mismatch**, the registered IP is right but the port doesn't match — re-check the `-port` your server runs on.
    4. If it says the **API was unreachable**, your host is blocking the server's outbound internet — allow it, and the check will pass on retry.

    Once you've whitelisted, you **don't need to restart** — a vehicle whose check previously failed **re-verifies automatically the next time someone starts its engine**, so just hop in and start the car. (A server restart also forces a fresh check.)
  </Accordion>

  <Accordion title="Headlights / dashboard / tail lights don't come on" icon="lightbulb">
    DayZ **1.29** changed how vehicle lights work, which left lights stuck off on older builds. **Update to the latest version** of the pack/tier (see the [Vehicles Changelog](/vehicles-changelog)) — every vehicle has been migrated to the 1.29 light system.

    Lights only show when the **engine is running** and a working **battery** is fitted — so if the engine won't start (see above), the lights won't either.
  </Accordion>

  <Accordion title="A car slides, spins or feels loose to drive" icon="gauge-high">
    This was addressed in the **Handling Resimulation & All-Wheel Drive** update — the entire fleet was resimulated and converted to **all-wheel drive**, which fixes the wheelspin and rear-end sliding some cars showed on older versions.

    **Update to the latest version** of the pack/tier or single-vehicle mod (see the [Vehicles Changelog](/vehicles-changelog)). It's a drop-in PBO update — no `types.xml` or server-config changes needed.
  </Accordion>

  <Accordion title="Do I still need Community Framework (@CF)?" icon="plug-circle-xmark">
    **No.** As of the DayZ 1.29 release the vehicle mods no longer depend on Community Framework. You can remove `@CF` from your load order **unless another mod on your server still requires it**. Removing CF will not affect the vehicles.
  </Accordion>

  <Accordion title="The vehicle won't spawn at all" icon="box">
    A spawn problem is a loot/economy or load-order issue, not whitelisting (whitelisting only affects the **engine**, not spawning):

    * Make sure the vehicle's classnames (and its wheels/doors) are in your `types.xml` or placed via your trader/events.
    * Make sure the mod pack is loaded on **both** client and server, and the PBOs are **signed** with a key present in the server `Keys\` folder.
  </Accordion>

  <Accordion title="Can I run a pack and the matching single-vehicle mod together?" icon="layer-group">
    No — a pack/tier and a standalone mod of the **same** vehicle both define that vehicle, so loading both at once will conflict. Run either the pack **or** the standalone for a given vehicle, not both.
  </Accordion>

  <Accordion title="Parts — what does each vehicle need to run?" icon="screwdriver-wrench">
    The vehicles use **vanilla** DayZ car parts: a car battery, spark plug, radiator (where applicable), and their wheels. There are no custom battery/part items to add to your economy — only the vehicle's own classnames, wheels and doors.
  </Accordion>
</AccordionGroup>

## Still stuck?

<Card title="Open a support ticket" icon="discord" href="https://discord.gg/7qWZzPUuTq">
  Reach the CZ Autoz team in the Discord support channel
</Card>