The #1 key is bloody massive! It's like a Frisbee. Flip it over and you'll notice the smart logo is in the direction as the front buttons. To access the battery, the back of the key needs to be rotated 15 degrees clockwise... ...and it'll end up like this. However,...
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453 EQ HV Service Plug
If you are doing any work on the high voltage side of the car, any orange cables or any electrical controllers for the battery or motor, you really should be pulling the service disconnect plug to stop the system from being able to apply the 400 volts through the HV...
EQ Pioneer Switching Issue
My Pioneer Stereo Turns On By Itself Not long after fitting the SPH-EVO62DAB stereo, I was laying in bed trying to get to sleep. I live in the middle of nowhere so it's usually very quiet but I could hear music. I figured it was some kids parked up on one of the...
Why Is My 453 Listed As A 451?
Your 453 Is Listed As A 451 In The Documents 453s in most EU countries had 451 on the ownership documentation. WTF! Photo by Giampiero M Smart did this because Mercedes were dodgy wankers trying to get around stupid "green" rules. The EU had mandated that all new...
450 Steering Rack Removal
Caution Before you continue, it is highly recommended that you immobilise the steering wheel so it can't move later on when you disconnect the column from the rack. I normally use elastic bungie cords from the driver's seat base, wrapped around the bottom of the...
#1 Over The Air Updates
Over The Air Update Versions & Features 1.1.0 - January 2023 - China Only Optional assistant now includes a white fox or a border collie. Ambient light option to react to music. Holiday themed "Easter eggs" on central display. 4 new skins fro the central display....
450 Rear Bulb Change
600cc And 700cc Smart Coupe & Cabrio The coupe and cabrio rear lights look but are fixed the same. Open the rear hatch, using a 10mm socket remove the 2 plastic nuts circled. Pull the edge of the light over the bolts and swing the unit towards the outside of the...
454 Clutch Actuator Setting
Note Do not touch clutch actuator on the tappet or the rubber bellow. Never touch the electric connector. The servo motor sensor system can be destroyed by static discharge. Removing The Clutch Actuator Switch off the ignition. Wait for the stopping time of the...
451 Clutch Actuator Setting
Note Do not touch clutch actuator on the tappet or the rubber bellow. Never touch the electric connector. The servo motor sensor system can be destroyed by static discharge. Removing The Clutch Actuator Switch off the ignition. Wait for the stopping time of the...
453 Bosch Stereo Pin Out
Bosch "Smart Media-System Connect" Connector A Pin Number Wire Colour Function 1 2 Grey/White CAN Bus High 3 Brown/White CAN Bus Low 4 Pink On/Off Signal Audio Gateway Controller Pin 11 (Amplifier pin 11, if present) 5 6 7 Red/Brown Fuse 26 8 Black/Brown Ground/Earth...
453 Auto Headlights
Retrofitting Auto Headlights To The 453 Pre-Facelift (Nov 2014 - Oct 2019) First you have to fit a new headlight stalk, click here. You can't just use any old light stalk, it must have the word "auto" on it. From what I can tell, all 453 models already have the...
454 Heater Bulbs
Heater Control Bulbs There are 3 bulbs that illuminate the heater controls on the 454 forfour. Remove the heater control panel from the car and lever the 3 clips open... ...and separate the 2 halves. The 6 buttons, 3 LEDs and 3 bulbs are now visible. The bulbs sit...
450 Coolant Specifications
Coolant Colour Don't pay too much attention to the colour of the coolant, it doesn't necessarily tell you what it is made from (propylene glycol, ethylene glycol etc). It is recommended that you top up with the same type coolant but if you bought the car new, you...
451 Dump Valve
Because I wanted a dump valve on my 451 turbo, we spent thousands having having custom silicone pipes made by Forge Motorsport. They cost us an absolute shitload each so we stuck the rest on SmartMods just in case anyone else wants to do the same. This is the T piece....
Roadster Aerial Grommet
So, Your Aerial Grommet Has Perished Previously you'd just have gone to a smart dealer and ordered part number 0013787V003000000 for about £7. However... Rubber Grommet No Longer Available Smart discontinued the rubber grommet. The problem is that people are noticing...
454 Fuse Box Access
Right Hand Drive The fuse box is hidden behind the glove box. Open the glove box, squeeze in the sides to release the side clips. This will allow the glove box flap to fold down even further. It will get to a point where the glove box flap will fall off the hinge pin....
Roadster ESP Controller Pinout
Roadster ABS/ESP Controller Connector Pin Number Wire Colour Function 1 Brown Earth/Ground 2 Red SAM plug 7, pin 2, fuse 34 3 4 5 Brown Earth/Ground 6 Red/Black SAM plug 1, pin 6, fuse 14 7 8 Grey/White Yaw sensor pin 5 9 Yellow/Green Yaw sensor pin 2 10 Violet/White...
450 ABS Pinout
450 600cc ABS Controller Connector Pin Number Wire Colour Function 1 Yellow Right rear RPM sensor 2 Grey Right rear RPM sensor 3 4 Black Right front RPM sensor 5 White Right front RPM sensor 6 Black Left front RPM sensor 7 White Left front RPM sensor 8 Red Left rear...
453 Electrical Connectors
I'm starting to get reports of failing connectors on the 453 so as each one is brought to my attention, I'll try to find the manufacturer and add the information here, plus the reason each reported one failed. 12v Battery Sensor Ben C from SmartTecnic contacted me...
Airbag Impact Sensors
It's quite rare for the airbag impact sensors to fail but it can occur. There are 3 possible types of impact sensor. Front Impact Sensors One on each side of the front crash bar. Only fitted on American 451 fortwos. Side Impact Sensors Fitted to each side of the car,...