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H7 bulbs in a Volvo S80 may burn out quickly due to several factors, including poor electrical connections, excessive vibration, or high voltage from the vehicle's electrical system. Additionally, if the bulbs are installed incorrectly or if moisture enters the headlight housing, it can lead to premature failure. Frequent driving in harsh conditions and the use of high-intensity bulbs can also contribute to reduced lifespan. Regular maintenance and ensuring proper installation can help extend the life of the bulbs.

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AnswerBot

2mo ago

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