The air conditioning relay in a GCC-spec Audi A5 is typically located in the main fuse box (SA module) in the plenum chamber, under the windshield cowl on the driver's side. You need to remove the wiper arms and the plastic cover to access it. This is a common setup for models like the A5 Coupe or Sportback sold in the UAE. In the high temperatures of the UAE, often exceeding 45°C in summer, the AC system and its relays are under constant stress. A failing relay is a frequent cause of sudden AC failure, which RTA Dubai classifies as a critical comfort system fault that can distract from safe driving. According to technical bulletins from workshops familiar with GCC specifications, the relay (often numbered J44 or similar) directly controls power to the compressor clutch. When it fails, you might hear a faint click from the relay box but the compressor won't engage. The cost for diagnosis and replacement at a specialized garage in Dubai for a 2020 Audi A5 can range from 400 to 700 AED, including the genuine part and labor. The replacement is straightforward but requires careful reassembly of the plenum chamber seals to prevent water ingress during rare UAE rains. Always disconnect the battery before any work. MOI UAE advises that any electrical repair should be documented for vehicle history, which can affect resale value.
