Even the upgraded speakers on the 451 are rubbish, the system has a lot of potential so lets realise it.
News
Roadster Sagging Doors
The door hinges on the Roadster allow the door to sag over the years and allow water in
Axle Caps


A decorative item to add some style to the ends of the suspension tube.
450 Starter Motor Removal
How to remove the starter motor
451 Electric Mirrors Retrofit
Important Note If your 451 was built from 12/2008 onwards, this job is going to be much easier. If your 451 was built 11/2008 or before, the extra nonsense is nailed onto the end of this page. You Will Need 2 new door wiring looms with the appropriate connectors. A...
Finding The Engine Number – Roadster
Where Is The Engine Number? This is one of those strange questions that I get asked on a fairly regular basis. I didn't understand why it was necessary at first until I was told the reason. Apparently, in some countries, if you import a car, they want to know...
Roadster Door Panel Removal
Door panel removal for the Roadster
Injector Specifications
Fuel injector data
Roadster Dash Pod Wiring
Key:
E = Earth
C4/8 = Connection plug 4, pin 8
Fuse* or F* = Direct connection fuse number
Black Yellow = Wire colour
Modules are labeled in the picture.
Burning Smell


Got a burning smell after driving?
Gas Strut Removal



Remove the gas struts that hold the boot open on all smarts and the bonnet open on a Roadster.
Unseize The Alternator
How Do I Know If My Alternator Is Seized? Have a look at this page that details the symptoms. How To Fix A Seized Alternator If your alternator is seized you may not need to replace with new or remove it from the car. The open design is to help cooling but...
451 Exhaust Removal
Fitting an exhaust to a non turbo smart fortwo 451.
450 Heater Wiring
Key:
E = Earth
C4/8 = Connection plug 4, pin 8
Fuse* or F* = Direct connection fuse number
Black Yellow = Wire colour
Modules are labeled in the picture.
Rust – Fortwo 450
Rust is inevitable but some rust is worse than others
Battery Removal – 451
Unlike the previous fortwo, the 451 has a slightly larger battery to deal with increased electrics or the MHD system. The problem with a physically larger battery is that the space is a bit tight for removal. Go over to the passenger side... ...and pull back the...
Calculate Your MPG


How many miles per gallon are you doing?
450 Lambda Sensors
The Lambda (O2) sensor is by far the most common fault that brings up the engine fault light.
450 Fog Light Bulb Change
The fog light bulbs shouldn’t die too often as they are rarely used but if they do give up you will need to get them fixed for the MOT.
451 Wing Mirror Caps
How to remove and refit the decorative wing mirror trims to the 451 wing mirrors