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450SL

There are two likely causes for your concern. Either your heater core inside your dashboard is clogged, or one of the doors that directs the air to your heater core is malfunctioning. I would enlist the help of a certified...

Hello. There are a few reasons why this is happening. The tachometer (https://www.yourmechanic.com/article/3-essential-things-to-know-about-your-car-s-tachometer) on the instrument cluster may be bad, and the instrument cluster may need to be replaced. There also could be a problem with the speedometer shaft and...

Hello. It sounds like the transmission isn’t shifting gears properly. A problem with the first, second, and/or third gear can cause difficulty with acceleration. Another possibility is that the catalytic converters are clogged (https://www.yourmechanic.com/services/catalytic-converter-replacement) causing poor acceleration. When this happens...

Hello. This sounds like the water pump (https://www.yourmechanic.com/services/water-pump-replacement), radiator (https://www.yourmechanic.com/services/radiator-replacement), radiator hoses (https://www.yourmechanic.com/services/radiator-hose-replacement), or even one of the heater hoses (https://www.yourmechanic.com/services/heater-hoses-replacement), have started to leak. It is also possible that the gasket to the thermostat could have a leak as...

If the transmission is slipping, then the vehicle will seem to not accelerate, or the vehicle will not move very fast. It seems that there could be an issue with the transmission that is causing the slippage. Check the kick-down...

Hello. It sounds like there is a short in the wiring harness of the car. If the wiring comes into contact with other wiring, this may cause a short and smoke from the dashboard. This sometimes happens due to old...

Hello. The Chilton manual will be able to give you accurate information as to the location of the voltage regulator (https://www.yourmechanic.com/services/instrument-voltage-regulator-replacement). This manual can tell you whether your voltage regulator is an internal or external part. It is not recommended...