450 Fortwo's With A SAM Unit Only And All Roadsters Plug the MB Star multiplexer box into the OBD port of the car, turn on the laptop and boot up DAS. Press unlock on the key, place it into the ignition and turn it to position 1 to power the car up. When you get to...
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MB Star – Delete Airbag Light
Plug the MB Star multiplexer box into the OBD port of the car, turn on the laptop and boot up DAS. Press unlock on the key, place it into the ignition and turn it to position 1 to power the car up. When you get to the main screen, press F2. Press F2. Press F2. Scroll...
MB Star – Reading Error Codes
Plug the MB Star multiplexer box into the OBD port of the car, turn on the laptop and boot up DAS. Press unlock on the key, place it into the ignition and turn it to position 1 to power the car up. When you get to the main screen, press F2. Press F2. Press F2. Scroll...
Interior Lights
Interior Lights The smart 450 has two interior lights, one on the centre console and one on the roof at the back. The interior lights will illuminate themselves for a short duration when you open the doors, they automatically turn off when: The ignition is started....
454 Forfour Speedo Cloning
Cloning The 454 Forfour Speedo Cloning is a process where you take data from 1 item and copy it to another to make an exact replica. Why Would I Need To Do That? If your speedo has failed completely, has a hardware or PCB fault, you need to fit a new speedo. Can I...
Brake Switch Test
The brake light switch failing is a common problem but other things can cause the same symptoms. Makes sense to test your switch before blindly replacing it.
450 Fortwo Speedo Cloning
Cloning The Fortwo Speedo Cloning is a process where you take data from 1 item and copy it to another to make an exact replica. Why Would I Need To Do That? If your speedo has failed completely, has a hardware or PCB fault, you need to fit a new speedo. Can I Just Fit...
452 Roadster ECU Cloning
Cloning The 452 Roadster ECU Cloning is a process where you take data from 1 item and copy it to another to make an exact replica. Why Would I Need To Do That? ECU's have been known to fail from water ingress, electrical damage from fitting the battery the wrong way...
450 Fortwo ECU Cloning
Cloning The 450 Fortwo ECU Cloning is a process where you take data from 1 item and copy it to another to make an exact replica. Why Would I Need To Do That? ECU's have been known to fail from water ingress, electrical damage from fitting the battery the wrong way...
Fitting New Reluctors
How to fit reluctor ABS rings both ways
Roadster Alloys On A Fortwo 450
This question seems to be coming up a lot now by people wanting wider wheels but not wanting to pay silly money for 3rd party alloys.
Wishbone Change Roadster
Hit something or had a little crash and bent the wishbone?
Wishbone Change 451
If you have bent a wishbone in a crash or the bushes are failing, fit a new wishbone.
451 Fortwo Speedo Cloning
Cloning The 451 Fortwo Speedo Cloning is a process where you take data from 1 item and copy it to another to make an exact replica. Why Would I Need To Do That? If your speedo has failed completely, has a hardware or PCB fault, you need to fit a new speedo. Can I Just...
451 Fuel Flap Solenoid
To remove the fuel flap solenoid, you have 2 options. You can take the rear panels off or leave them on. Rear Panels Removed If the panels are off, it makes it easy. Open the filler flap. On the back edge are 2 clips. They are very easy to push in by hand. Lever the...
451 Heater Fan Brushes
451 Heater Motor Brushes For some reason, it's mainly the American 451s that suffer with brush problems. Dunno why but it does affect non Americans as well. The standard brushes seem low quality and seem to wear very quickly. Probably because the commutator gets a...
Hella 451 DRL Repair
The 5 per side Hella daytime running lights on the 451 where surprisingly poor quality and failed regularly.
451 DRL Options
Pre-Facelift DRLs The first type of daytime running lights available for the 451 was this type. They consist of a pair of Hella lights and surrounds. Smart part number A 451 820 00 61. However, if you buy them from smart, they'll be ridiculously expensive. So, do a...
Roadster Rear Light Faults
The biggest cause of rear lights not working on the Roadster is water damage and corrosion (surprise surprise). So, if a bulb isn't working, obviously 1st check that the bulb filament(s) are ok. Also check to make sure they are fitted correctly. Remove the bulb that...
Fitting A Better Horn
The Horn The standard horn fitted to all smarts isn't loud enough. It doesn't draw attention like it should. In fact, it's almost laughable and many people say it's like a scooter horn. There's a reason for that. That's exactly what it is. A single low wattage disc...