The most common cause of a "zizi" or whistling sound immediately after starting a car in the UAE is a worn or loose accessory drive belt (serpentine belt). The intense summer heat, which regularly exceeds 45°C, and ambient dust rapidly degrade rubber belts, causing them to harden, crack, or slip on the pulleys. According to the RTA Dubai's vehicle inspection criteria for 2024, issues with auxiliary systems, including belt-driven components, are among the top five reasons for initial test failures for vehicles over 5 years old. A slipping belt not only creates noise but can lead to the failure of critical components like the alternator or air conditioning compressor. The UAE Ministry of Energy and Infrastructure's guidelines for vehicle maintenance in high-temperature climates recommend visual inspection of belts every 20,000 km or 12 months, whichever comes first, as preventative care. For a common GCC-spec Toyota Camry, the cost for a genuine replacement belt and labor at a local workshop typically ranges between AED 250 to AED 400, a minor expense compared to the potential cost of a failed alternator on Sheikh Zayed Road during peak traffic.
- Primary cause: Worn/slipping serpentine belt due to heat and dust.
- RTA Dubai data: Belt system faults are a leading cause of test failure for older vehicles.
- Maintenance advice: Inspect every 20,000 km/12 months per UAE Ministry guidelines.
- Typical cost for Camry: AED 250-400 for parts and labor.
