Do it yourself
Frequently asked questions about cars and motorcycles
Car Tutorial (Do it yourself) Motorcycle Tutorial (Do it yourself) Frequently Asked Questions
Why doesn't the central locking system of the Smart Fortwo work?
Answer: If the central locking system of your Smart Fortwo is not working, it means that there is an electrical issue, and for this reason, you need to seek t... read all

Posted on 27-06-2023
Where is the Smart's compressor located?
Answer: The compressor is a component of the tire repair kit. In the Smart car, where a spare tire is not provided, this kit is located in a special compartme... read all

Posted on 25-06-2023
Why does the Smart ForTwo struggle to start when it's cold?
Answer: If our Smart ForTwo struggles to start in cold weather, it probably means there is a problem with the fuel system. Specifically, it could be a malfunc... read all

Posted on 25-06-2023
Where can I find the security code for the radio of Smart 452?
Answer: If you need to unlock the stock radio of your Smart 452 (year 2003-2005), you just need to consult the vehicle's paper manual. Inside, there is a chap... read all

Posted on 22-06-2023
What could be the problem with the central locking of the Smart Fortwo?
Answer: If the central locking system of the Smart Fortwo is not working, the first thing to check is whether the remote control battery is functioning. Usual... read all

Posted on 20-06-2023
Why does the door of the Smart Forfour tr not open from the outside?
Answer: When this problem occurs, it usually affects only one door and not both. So try to open the passenger side door. Once you are in the car, try to go to... read all

Posted on 20-06-2023
Why does the automatic transmission of the Smart 451 get stuck?
Answer: The "451" version of the Smart car has an automatic transmission, which is an electro-actuated gearbox that works by engaging the clutch through an el... read all

Posted on 20-06-2023
Where is the ABS control unit located in the Smart 451?
Answer: The Smart 451 has its ABS control unit installed in the engine compartment. It is quite easy to locate, as it is located immediately behind the power ... read all

Posted on 20-06-2023
Where is the alternator fuse located in the Smart car?
Answer: The component in question performs the task of protecting the alternator from possible overloads. It is found in the fuse box and to know its exact te... read all

Posted on 20-06-2023
What is included in the Smart ForTwo's service?
Answer: The maintenance of the Smart ForTwo 453 must be carried out every 15,000 km or 12 months, depending on which of the two milestones is reached first. T... read all

Posted on 20-06-2023
What does the maintenance light on the Smart 450 indicate?
Answer: If the orange maintenance light on the instrument panel of your Smart 450 (year 1998-2007) turns on, it simply means that it is time to have the vehic... read all

Posted on 19-06-2023
How to reset the service on Smart 451?
Answer: To reset the service of the Smart 451, we recommend doing it only after performing regular maintenance. Then, you can go to the onboard menu and proce... read all

Posted on 17-06-2023
Where is the water poured into the Smart car?
Answer: Water, usually mixed 50/50 with antifreeze or coolant liquid, is poured into the radiator through a plastic tank connected to it by a high-pressure ru... read all

Posted on 17-06-2023
Can the panoramic roof of a Smart car break? How much does it cost to replace it?
Answer: Unfortunately, the answer is yes, the Smart's panoramic roof can break and its replacement is not at all economical. We are talking about figures that... read all

Posted on 15-06-2023
How do you replace the thermostat valve on a Smart 450?
Answer: To replace the thermostat valve, we need to remove the following elements: -engine cover; -coolant; -alternator; -thermostat cover; -fastening screws.... read all

Posted on 15-06-2023
How many kilometers does the Smart 1000 engine last and how much does it consume?
Answer: The Smart 1000 has a motor lifespan that ranges from 120,000 to 150,000 kilometers, which can vary depending on the engine conditions, maintenance, an... read all

Posted on 15-06-2023
What is the amount of engine oil that goes into the Smart 453?
Answer: The amount of oil required for an oil change on the Smart 453 is 3.5 liters. This figure is for the Smart 453 1.0 with 60 kilowatts of power, always c... read all

Posted on 14-06-2023
What do the three illuminated lines on the Smart dashboard represent?
Answer: Generally, the errors detected by the three horizontal lines on the Smart instrument panel are as follows: 1) DTC P0034: Transmission: Selector lever;... read all

Posted on 14-06-2023
Where is the battery located in the Smart 451?
Answer: The service battery in the Smart 451 is located in the back of the car. In fact, it is equipped with a central engine, therefore located behind the se... read all

Posted on 14-06-2023
What problems does a Smart Fortwo have?
Answer: The problems with the Smart Fortwo come from how it is used; if we keep it in its place, which is the city, and use it as a Citycar, it doesn't have m... read all

Posted on 14-06-2023
Where can I retrieve the unlock code for the Smart 451 car radio?
Answer: The unlock code for the Smart 451 car radio comes in handy in case the aforementioned radio goes into security lock (attempted theft, sudden power fai... read all

Posted on 12-06-2023
Where is the lambda probe located on the Smart 451?
Answer: The lambda probe of the Smart 451 is located on the catalytic converter of the exhaust: in order to replace it, you will need to remove the rear bumpe... read all

Posted on 10-06-2023
Why won't the roof of the Smart Fortwo 451 close?
Answer: If the roof of your Smart Fortwo 451 (year 2007-2015) does not close, it means that there is a fault in the car's electrical system and you should ask... read all

Posted on 9-06-2023
How do you unlock the rear hatch of the Smart 451?
Answer: If you can't open the trunk from the outside, know that all cars have an unlocking system from the inside. Usually, it is located on the right side (l... read all

Posted on 8-06-2023
Where can I find the engine oil for the Smart car?
Answer: The suitable engine oil for the Smart can be purchased at most auto product retailers, online on multivendor platforms (such as Amazon and Ebay), and ... read all

Posted on 7-06-2023
How do you disassemble the Smart's speakers?
Answer: To remove the speakers installed on the Smart car, we need to open the door and remove the plastic panel inside. Once this is done, we can remove the ... read all

Posted on 7-06-2023
Where is the battery located in the Smart Forfour?
Answer: The service battery of your Smart Forfour is located in the rear of the vehicle; this is due to the fact that the engine is installed in the rear and ... read all

Posted on 6-06-2023
How much does it cost to renew the retractable roof of the Smart 451?
Answer: The retractable roof of the Smart 451 can cost from a minimum of 50 euros (non-original) to a maximum of 300 euros (original). As for maintenance acce... read all

Posted on 6-06-2023
How many Ah should the battery of the Smart 451 be?
Answer: The battery of the Smart 451 can range from 50 to 65 Ah depending on the model and performance. However, within this range, the amperage between 50 an... read all

Posted on 6-06-2023
What does the yellow triangle warning light indicate in the Smart ForTwo?
Answer: In the Smart ForTwo, the ignition of the yellow triangle warning light indicates the presence of a general malfunction that is not specified. It may b... read all

Posted on 6-06-2023
Why did the yellow engine malfunction light come on in the Smart ForTwo?
Answer: If the yellow engine malfunction light has turned on in our Smart ForTwo, it means that a malfunction has been detected in the fuel system, exhaust sy... read all

Posted on 5-06-2023
What problems does the EGR valve of the Smart present?
Answer: When problems related to the EGR valve occur on the Smart car, it is possible to notice a loss of engine power and excessive fuel consumption: the pro... read all

Posted on 5-06-2023
Why is the gear shift of the Smart Forfour 2 not working?
Answer: If you are experiencing serious malfunctions with the gearbox of your Smart Forfour Mk2 (year 2014-2021), there may be various causes, both electronic... read all

Posted on 4-06-2023
Why doesn't the automatic gearbox of the Smart 451 shift to R?
Answer: If the automatic transmission of your Smart 451 (year 2007-2015) does not activate the R (reverse) gear, it means that there is an electrical problem ... read all

Posted on 3-06-2023
What is the range in reserve of the Smart ForTwo?
Answer: Regarding the Smart ForTwo, the fuel reserve is 5 liters. It is enough to travel approximately 50 kilometers, of course, subject to variation based on... read all

Posted on 1-06-2023
What does the wrench symbol on the Smart car dashboard indicate?
Answer: Every driver knows that after covering a certain number of kilometers with their car, it is necessary to carry out a new service. However, it is easy ... read all

Posted on 1-06-2023
What problems could the Smart 1.0 mhd present?
Answer: The version registered in the year 2010, in particular, seems to have suffered from problems with electrical wiring. In some cases, users who purchase... read all

Posted on 31-05-2023
Why isn't the display of the Smart Fortwo working?
Answer: If the Smart Fortwo's display is not working, it is possible that the fuse that regulates its operation has blown; the problem could also be due to da... read all

Posted on 29-05-2023
How much engine oil is required in the Smart Fortwo?
Answer: In the Smart Fortwo, the engine requires an amount of 3.4 liters of motor oil. This needs to be replaced at every service, along with the oil filter, ... read all

Posted on 28-05-2023
Where is the central locking control unit located in the Smart 450?
Answer: The central unit of the central locking system of the Smart 450 is located inside the car. Specifically, it is located below the steering wheel, next ... read all

Posted on 26-05-2023
Where is the brake oil reservoir located on the Smart car?
Answer: The brake fluid reservoir on the Smart car is located in the vehicle's hood, in the upper corner on the driver's side. It has a yellow cap that makes ... read all

Posted on 25-05-2023
What does error code P1700 indicate on a Smart Fortwo?
Answer: The error code P1700 on the Smart Fortwo indicates "selected gear different from engaged gear". Most of the time, this problem is simply resolved with... read all

Posted on 24-05-2023
How to reset the maintenance light on Smart Forfour 453?
Answer: Let's turn on the dashboard, and using the button on the left side of the steering wheel, scroll until the service warning is displayed. Press and hol... read all

Posted on 24-05-2023
Why doesn't the fuel tank lid of the Smart 453 open?
Answer: If you are unable to properly open the fuel tank door of your Smart 453 (year 2014-2022), it is likely that there is a buildup of dirt in the opening ... read all

Posted on 22-05-2023
Where are the fuses located in the Smart 454?
Answer: To find all the various fuses inside your Smart 454 (year 2004-2006), simply go to the cabin and reach the driver's side. Immediately after, remove th... read all

Posted on 22-05-2023
What to do if the gearbox of the Smart 451 r ckw gets stuck?
Answer: If the gearbox of your Smart 451 gets stuck, the problem can be solved by performing a diagnosis to identify the cause (error code). Typically, the di... read all

Posted on 19-05-2023
What to do when the car radio of the Smart 451 gets stuck?
Answer: This is a problem that can occur when the car remains stationary for a couple of days or the battery drains. In this case, the car radio itself may re... read all

Posted on 19-05-2023
What to do when the tire pressure warning light comes on in the Smart car?
Answer: The illuminated light means that there is a problem with one or more tires. In this case, it is necessary to check the pressure and wear condition of ... read all

Posted on 19-05-2023

See also

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Why don't the interior lights in the Toyota RAV4 work? Answer: 29-06-2023
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Why does the start and stop function of the Seat Arona not work? Answer: 29-06-2023
Why is the trunk of the Mercedes locked? Answer: 28-06-2023
Where is the AdBlue tank located on the Peugeot 208? Answer: 28-06-2023
Where should the windshield washer fluid be placed in the Dacia Sandero? Answer: 28-06-2023