Smartmods

smartmods
for all your modding needs, recommended by Evilution

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S2smarts
S2smarts - the only garage personally recommended by evilution
Tune4Performance
Tune4Performance - 451 remaps, custom maps, rolling road and dyno

Kane Harrison

Premium Mod 451 Boot Release Button451 Fortwo

For some reason, smart thought it was a step forward to omit an interior boot release button on the 451. Idiots. Let us add what they took away.

Normal Mod 451 Boot Switch Change451 Fortwo

The boot opening handle switch was one of the first repeating problems when the 451 was released in the UK. What made the problem worse was the lack of stock that smart had, this meant a long wait.

Normal Mod 451 Boot Switch Repair451 Fortwo

The 451 boot release switch is problematic and will slowly become a common problem. However, the issue isn't electrical or mechanical for a change, it's just good old fashioned bad design. Even though the whole switch assembly is tucked up out of the way and not in...

Premium Mod 451 Brake Caliper Removal451 Fortwo

First of all loosen front wheel nuts, jack up the car and place the axle stand securely. Lower onto the stand. Check for security of car on stand - you're going to be working on it! With the wheel removed it will look like this. You are now going to remove the...

Premium Mod 451 Brake Caliper Seals451 Fortwo

Back in 2014, Dave from Brakes International was good enough to send over a calliper rebuild kit. I was supposed to do a fitting guide and send people over to his shop to buy the kits. Unfortunately I'm useless at remembering to do stuff like that. The kit got stored...

Premium Mod 451 Brake Disc Fitting451 Fortwo

Jack up the car and remove the wheel. Look over behind the brake calliper, you'll see 2x 18mm bolts, remove these. 115Nm on refitting. Place the calliper on top of the hub so the brake hose isn't being pulled. Remove the Torx30 bolt. (M6, 1mm pitch, 10mm long)...

Premium Mod 451 Brake Light Wiring451 Fortwo

Key:
E = Earth
C4/8 = Connection plug 4, pin 8
Fuse* = Direct connection fuse number
Black Yellow = Wire colour

Modules are labeled in the picture.

Premium Mod 451 Brake Master Cylinder451 Fortwo

Depending on what you want to do, you can remove just the master cylinder, the master cylinder with the vacuum brake booster or the entire brake pedal assembly. Firstly, drain the brake fluid from the system. You will need MB Star Diagnostics to refill the system...

Normal Mod 451 Brake Pedal Removal451 Fortwo

Why Would I Need To Remove The Brake Pedal? The main reason is that you are removing the carpet but you may have other reasons. This is the brake pedal. If you didn't know that, you shouldn't be driving or maybe you're Italian and have never used it. You know when you...

Premium Mod 451 Brake Shoe Change451 Fortwo

The Parts The front wheels have discs, pads and calipers. The rear wheels have drums, shoes and pistons. Here we have the piston at the top, the shoes down either side and a load of springs. The Special Tool I have just rewritten this page and taken new photos. This...

Premium Mod 451 Cabin Air Inlet Box451 Fortwo

The cabin air inlet is fed by a massive plastic box fixed to the outside bulkhead. Seeing it is easy, you can remove the bonnet panel and there it is (I've highlighted it in red). Removing it is a bit of a ball ache. Remove the front panels, click here. This is half...

Normal Mod 451 CDI 45bhp Sensors451 Fortwo

Air Inlet Temperature Sensor On the back of the intercooler, just behind the top pipe. Press the tab on the electrical connector and pull the connector free. When the electrical connector is out of the way, pinch the tabs on eaither side of the sensor and pull it out....

Premium Mod 451 CDI 54bhp Sensors451 Fortwo

54bhp CDI - The Over-Engineered Pain In The Arse The 45bhp CDI engine was reliable and efficient, however, due to the Euro 5 emissions standards coming into force, smart had to make changes. They added a DPF (Diesel Particulate Filter) which removes the particulates...