Quick answer: Move moisture-sensitive gear to dry storage, then note where the first wet mark appears. Check the accessible drains, seals, rails and tailgate interface using your cover’s instructions. Stop if water reaches electrical equipment. Arrange service for a persistent leak; a new cover is a later decision, not the first fix.
Protect your gear, then identify where the water starts
Found wet tools or damp luggage under a closed Shark 6 roller cover? Move moisture-sensitive items to dry storage and note where the first wet mark appears. The route water takes is more useful than the size of the final puddle.
Park safely, keep the shutter still while inspecting it, and photograph the tub before drying it. Record whether it happened after rain or washing, whether the ute was on a slope, and whether the problem began after fitting or accessory work. These are clues, not a diagnosis.
Stop if water is reaching electrical equipment
Do not operate a wet or damaged electric cover, handle wet electrical connectors or probe live wiring. Keep clear of moving parts and arrange assessment by a qualified installer or service provider.
A mat can hide moisture while leaving its cause unresolved. Where practical, lift removable cargo and mats according to their instructions so you can see and dry the affected area. Do not remove trim or fixed equipment simply to investigate.
Use the wet area to choose the next check
Treat these as possible inspection routes for a roller-shutter installation. They are not a list of confirmed faults affecting every Shark 6 or every brand of cover. Compare what you can see with the instructions for your actual kit.

| What you notice | Possible route to assess | What to record |
|---|---|---|
| Water near the front canister | Accessible drain connections, hose condition and the designated discharge route. | Where the first drip appears; visible disconnected or kinked hoses; recent fitting work. |
| A wet line below a side rail | Seal contact, rail seating or an accessory interface. | Which side and section; whether it appeared after a rack, bar or liner was fitted. |
| Water near the tailgate corners | Tailgate interface, seals and the way water reaches that end of the tub. | Whether it happens while parked, after washing, or with a particular parking angle. |
| Dampness mainly underneath a removable mat | Trapped moisture, a concealed entry route or wet cargo. | The wet pattern before moving the mat; whether the area fully dries between events. |
| Water beside wiring or an electric controller | Possible exposure of electrical components. | Photographs from a safe position and the exact symptoms for an installer; stop operation. |
Check accessible drains without modifying the installation
Use the cover’s own fitting and maintenance instructions to identify its drainage arrangement. Do not assume every cover has the same outlets or hose count. For the linked EVparts4x4 kit, the listed packing includes four drainage hoses; the route still depends on the actual installation.
- Look for loose surface debris around accessible areas identified for routine cleaning. Remove it only by the method permitted in the kit instructions.
- From a safe position, look for a visible hose kink, disconnection or outlet obstruction. Photograph a concern before touching it.
- Check that the intended discharge point is not simply delivering water back into the protected cargo area. Ask the installer to verify any hidden routing.
- Do not push wire through a hose, use compressed air, pull concealed connections or enlarge an opening without the exact approved procedure.
A hose being present does not establish that it is clear or correctly routed. If you cannot see the relevant part, stop at that limit and ask the installer to inspect it. Avoid dismantling the canister or rail assembly on the basis of a generic online video.
Check the seals, rails and tailgate interface
Look for visible debris at accessible sealing surfaces, obvious gaps or damage, and changes near sports-bar feet or brackets. A fresh leak after accessory work is a reason to revisit that interface with the installer, not proof the whole shutter has failed.
Use only cleaning and care products permitted for the vehicle surfaces and the cover’s seals. Do not apply a continuous bead of sealant over an unidentified route: it can conceal the entry point or obstruct drainage that needs to remain open.
- Photograph any damaged or displaced seal and identify the kit and part before requesting a replacement.
- Ask the installer to assess rail seating and alignment against the fitting instructions. Do not invent a tightening torque or reposition the rails by trial and error.
- Keep the tailgate’s operation, original drains and required access clear. A generic strip or improvised plug is not a confirmed fix.

Use BYD Australia’s vehicle information and applicable handbook for vehicle-care requirements, together with the cover manufacturer’s own instructions for the accessory. The vehicle handbook does not certify an aftermarket shutter or replace its fitting procedure.
Confirm the result and give the installer a useful report
After the permitted cleaning or an installer’s correction, start with a dry, visible area and follow the kit’s documented water-check procedure. If none is available, ask for one. Do not aim a pressure washer at seals or electrical parts to reproduce the leak.
Record the first entry point during the documented check or after the next ordinary rain event. Change one agreed factor at a time so the result can be interpreted. Persistent water entry, a jammed cover or electrical symptoms need service rather than repeated improvised fixes.
| Include | Why it helps |
|---|---|
| Cover brand, selected version and order details if available | Identifies the correct instructions and compatible service parts. |
| Vehicle build, tub/liner and fitted bar or rack | Shows the installation interfaces that need assessment. |
| Photos of the first wet point and accessible drain route | Separates observations from guesses about the cause. |
| Rain/wash conditions, parking angle and recent changes | Helps the installer reproduce the relevant situation without excessive testing. |
| Any control fault or unusual opening behaviour | Flags an electric-cover issue that needs its own service procedure. |
Ask for the next supported action: permitted cleaning, a routing correction, alignment work, a confirmed replacement seal or another identified part. There is no benefit in ordering a whole cover before that assessment establishes a reason.
When should you consider repair or a replacement cover?
Keep and service the existing cover when assessment identifies a correctable drain, seal or fitting issue and appropriate support is available. If a component needs replacement, match the exact kit, part and revision; this guide does not establish that a generic seal or hose will fit.
Consider another complete cover when an installer identifies damage or an incompatible arrangement that cannot sensibly be corrected, and the proposed replacement has a confirmed fitment and drainage plan. Compare the complete fitting and delivery cost before deciding.
The complete shutter listing is relevant only at that replacement decision. It is not a leak-repair accessory, and powered opening does not create a waterproofing upgrade. For wider mat, liner and cover choices, see the Shark 6 tub-protection guide.
Frequently asked questions
Why is my BYD Shark 6 roller cover leaking?
Several routes are possible, including the drainage arrangement, seals, rail or tailgate interfaces, and changes around accessories. Find the first wet point and check the actual kit instructions. This guide does not establish one cause for every vehicle or cover.
Does water in the tub mean I need a new cover?
No. First assess accessible drains, seals and installation interfaces. A correctable fitting or service issue may not require a complete replacement. Buy a new cover only when an assessment gives a clear reason and the replacement arrangement is confirmed.
How many drain hoses should my cover have?
Use the packing list and fitting guide for your exact cover. The linked EVparts4x4 kit lists four drainage hoses, but another brand or revision may differ. Hose count alone does not prove correct routing or performance.
Can I pressure-wash it to find the leak?
Do not use a pressure washer as an improvised leak test. Follow the kit’s documented checking method and keep water away from electrical equipment. If no supported method is available, ask the installer before testing.
Should I seal every gap with silicone?
Do not seal an unidentified path. Some openings may be part of water management, and an unsuitable product may affect a seal or finish. Identify the route and use only the method and material specified for that installation.
Will a tub mat keep my luggage dry?
A mat does not repair a leak or turn the tub into a sealed container. It can conceal trapped moisture. Identify and address the water entry, dry accessible areas appropriately and use protective storage for moisture-sensitive items.
Is an electric roller shutter more waterproof than manual?
Powered operation alone does not establish better water protection. Assess the actual rails, seals, tailgate interface, drainage and installation of the selected system. Choose the opening method for its function, not an assumed waterproofing benefit.
When should I stop investigating and contact an installer?
Stop when water is near electrical equipment, the cover jams, a hidden or damaged component needs inspection, or water entry persists after permitted maintenance. Send the kit details, photographs and observed conditions so the correct service procedure can be identified.