Developmentof fault free systems and theirrisk assessment, in early phase of development were set in 1950s, which later on used a standardise techniques for safety and reliabilityissues in products. Failure Modes and Effect Analysis (FMEA) introduced as oneof them and still considers a much reliabletechnique to identify and mitigate risks in early phase of system designingeven though systems become complex now days.This report presents an extensionto Failure Mode and Effect Analysis (FMEA),in such a way that it can be appliedfor safety analysis of complex systems; both for hardware and softwaredevelopment using object oriented approach.

A systematic approach for validationand identification of failure modes were used in this method using systemarchitecture; a complete boundary diagram with the behaviour of the system inlogical, physical and attribute objects. Behaviour of selected objects wereanalysed using FMEA methodology with the help of system designing team, wherevalidation and verification processes highlights possibility of redesigning ormodifying component. Cabin cooling system for hybrid vehicle is used as a casestudy for this purpose.

Volvo Car Group (VCG) is one of the most well-shy;‐known and respectedcar brands with sales in morethan 100 countries. The first car from VCG was produced in 1927 at Gothenburg, sincethen they have delivered several reliable cars equipped with the world-shy;‐leadinginnovations. Today they have produced some premium cars as well, with differentbody types: Sedans, Estates/Sports wagons, Cross Country vehicles, SUVs, Convertibles etc.[1] and still committee to bring top level satisfaction to customers with premium productsand services, containing high quality standards. In 2012, Volvo Cars sold a totalof 421,951 cars. Relative to the strength of the brand, Volvo Cars is a small producer, with a global marketshare of 1–2percent.The largest market, the United States, represented some 16per cent of the total sales volume in 2012, followed by Sweden (12%), China (10%),Germany (7.5%) and the UK (7.5%).

Quality was of paramount importance to the men who founded Volvo. This basic concept, which wasformulated back in 1926, still applies to Volvo's way of making cars. Today, demand of reliable and high quality vehicles from the customers areone of the biggest challenges car industries are facing, because of rise in capabilities and functionality of modern vehicles. They somehow,directly or indirectly affects their quality and reliability standards.Conventionally, reliability has been accomplished through widespreadtesting and applies of method such as probabilistic reliability modelling [2] but the problem with thesetechniques is that they are performed in the delayed phase of improvement. The challenge is to devise in quality andreliability early in expansion phase, where it is simpler to acquire actions,which overcome these with the help of improved consistency in design methods. Failure mode and effect analysis (FMEA) plays an important role here; itevaluates the possible reliability troubles (failures) in the early hours ofthe progress cycle. Steady use of this technique in design process let theengineer to drawing out the failures in manufacture dependable, protected, andcustomer satisfy in goods. It alsocarries the chronological information, which can be used in upcoming product development[3].