In the UAE's extreme heat, a Volvo XC90's fan running for an hour after shutdown is almost always a sign of a fault, most commonly a failing coolant temperature sensor or a stuck cooling fan relay. While the cooling system is designed for brief post-shutdown operation, prolonged running drains the battery and indicates incorrect temperature data is being sent. For the common GCC-spec XC90 B5 mild-hybrid with its 250hp engine, the fan should typically cycle off within 10-15 minutes of parking, even after a drive on the Dubai-Abu Dhabi highway in 45°C heat. The RTA Dubai's vehicle inspection guidelines emphasize the importance of a functional cooling system for roadworthiness, as overheating is a leading cause of breakdowns. Similarly, workshops aligned with MOI UAE standards would flag this as a critical electrical/ cooling system check. Ignoring it risks a dead battery, especially with the additional load from prolonged air-conditioning use common here.
A proper diagnosis at a specialist workshop using Volvo's VIDA tool is crucial. The cost structure in AED typically looks like this:
| Diagnostic Fee (includes code reading) | AED 250 - 400 |
|---|
| Coolant Temperature Sensor (Part) | AED 300 - 500 |
| Cooling Fan Relay (Part) | AED 150 - 250 |
| Labor (1.5 - 2.5 hours) | AED 450 - 750 |
- Primary Cause: Faulty sensor sending false high-temp signals to the ECU.
- Immediate Risk: Battery drain, potentially leaving you stranded.
- Recommended Action: Professional diagnostic scan before replacing parts.
- UAE-Specific Note: High ambient temperatures accelerate wear on these components.
The total repair cost (TCO) for this issue in the UAE usually ranges from AED 1,150 to AED 1,900, depending on the faulty part and labor rates. This translates to a significant but necessary expense to prevent a larger breakdown, especially during summer. Based on common garage estimates in Dubai and Abu Dhabi for 2023-2024 model year vehicles, the diagnostic is the essential first step to avoid unnecessary part replacement.
