This year the CLK's standard eight-speaker Bose audio system is scrapped in favor of a 10-speaker Harman Kardon unit, while the navigation system is now DVD-based. The 320 model gets upgraded standard wheels, and offers a lighting package with foglights that illuminate with the turn signals, or when the steering wheel is turned. The 500's five-speed automatic is replaced with a new seven-speed unit with steering wheel shift controls. Also, ventilated front seats are now optional. The complimentary scheduled maintenance program has been dropped for 2005.