RATTLING NOISE UNDER LIGHT LOAD. Faint rattling noise is heard from engine while under a light load or in a coasting overrun condition. Normal turbocharger operational sounds. Depending on current Integration level, reprogram vehicle to improve engine acoustics. For conditions that are similar to the situation described: Run diagnosis with ISTA and check the level to which the vehicle has been programmed; Program and encode the complete vehicle using ISTA/P 3.60.0 or ISTA NEXT 4.02.10 or higher to integration level F056-16-11-500 or higher.
