If the yellow exclamation comes on and stays on, there's a chance you'll lose power too. Check the rear reluctor rings. If it has cracked or fallen off, it will bring up an error. This is the most common cause for the light to be on. However, 3 other options that will...
Info
#1 Model Comparison List
Smart's own website doesn't seem to tell you the differences between the #1 models in an easy to understand format like they used to. The old smart brochures had a table of stuff that explained what model had what features. I went through all the data I could find and...
#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....
1 Line On The Speedo
One single horizontal bar on the speedo display means you have a CAN bus fault, this can either be really easy or really hard to fix.
12 Volt Battery Specifications






It's not the easiest thing to find and they don't last for ever.
3D Printable Parts





Welcome To The Future With 3D printers coming down in price and the quality increasing, it comes as no surprise that people are 3D printing replacement parts for their cars that either cost too much normally to replace or simply aren't available. Parts go out of stock...
450 ABS Water Ingress
History Of The Fault Back in early 2000's, a smart specialist posted in a forum stating that there was an issue with the 450 fortwo ABS system. They said that over time, the ABS controller would fail. It was their recommendation that owners brought their car to their...
450 Air Conditioning Drain
Water under the carpet in your fortwo?
450 Almond To Peanut Facelift
Facelift From Almond To Peanut Headlights You can if you want. Some people liked the facelift design. You Will Need Peanut headlights, Partial wiring loom that connects to the headlights. Entire set of front panels from a Coupe with peanut headlights. Central beam....
450 Cabin Air Intake Drain
The air conditioning system removes a lot of water from the air, this water is released from a condenser box behind the front panel.
450 CAN Bus PIDs
Credit All credit for this information goes to Jack Rogers. This is all well over my level of understanding. Please don't message me asking questions about it as I have no idea. Notes The tables below are laid out in binary. Each CAN message consists of upto 8...
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...
450 Fortwo Bulbs list


There are a lot of bulbs, make sure you get the right ones.
450 Fortwo LCD
The smart LCD display tells us a lot of useful information if you know what you are looking at.
450 Fortwo Not Selecting Reverse

The problem with sensors and automation is it only takes 1 thing for everything to go wrong.
450 Fortwo SAM Unit Components
Layout If you want to know other other components, let me know. These are the 2 areas that are most problematic. 40 Pin Connector Left (Section 1) Component Number Component Type Ident Rating 1 0603 Resistor 473 47 kΩ 2 0603 Capacitor Blank 10 nF 3 0603 Resistor 823...
450 Fortwo Towing
How to tow your smart to safety.
450 Headlight Disassembly
How to completely strip your headlights to base parts.
450 High Level Brake Light
Changing the bulbs in the high level brake light assembly.
450 Horn Fault



Some dick head cuts you up, you go to show your displeasure with a sound of the horn and it doesn't work