If there really is a breakdown annoying is the latter. Even if it is not necessarily dramatic, you must quickly evacuate your problem for obvious security situations. Modest advice, supposed that you know an insignificant problem of meter, it is advised to use a smartphone app like for example Waze . You will know your speed as close as possible using a mechanism GPS . In addition, the positions of automatic and portable speed cameras will be reported by other users. During this file, we will look at what will be the most frequent speedometer concerns for this smart forfour, but also their reasons.
The jumping needle on your smart forfour
It’s a particularly worrisome problem. As soon as your needle jumps, it’s complicated to understand its actual speed . In addition, the gaze will naturally be captivated by this problem, which is rather problematic. There are several common reasons for this difficulty. The connection between the speed sensor and the dial of the smart forfour is deficient. Another cause, the speed sensor is defective, it will probably be necessary to replace it with a new one. More rarely, the problem arises from the axis of rotation of the needle.
The counter of your smart forfour remains at zero
It is by far the problème the most annoying. The display of this counter which remains at zero is often due to a sensor problem. This sensor is not necessarily damaged. Sometimes it will be enough to put a specific product for electrical connections so as to clean it. The problem of electrical connections thus remains very recurrent for your smart forfour. However, it also happens that the pivot which allows the needle to turn is defective. Therefore, it is complicated to buy just this component at retail. In case the problem is not cleared, you will probably have to replace the sensors of the smart forfour. It is advisable despite everything to go to a professional in order to carry out a real check.
Approximate speed of the counter
Note that originally, this dial is a bit rough. If you ever drive, the visualized celerity is approximately 5% just above the real look of the smart forfour. This is a safety measure that manufacturers have decided to avoid radars, as well as worries with motorists. So, if you want to measure your speed, we advise you to drive on the highway accompanied by an app such as waze. For fixed speeds, the app will be much more precise. Assuming that your speed is significantly different, then there is probably a problem with the sonar. It is therefore advisable to check them. As we have seen, the problem generally arises from the probes on the smart forfour. Replacing this sensor will often cost cheaper than changing the dial. Therefore check the cause of the problem before going to a professional. Hope you find this text useful, enjoy the ride!