Adapted from a picture by Gerald Drane to make it relevant to the Smart.
Kane Harrison
Battery Fluid Test



This is a refractometer. It measures the refraction of light through different fluids. Since the refraction is known for certain fluids, it can tell you information about that fluid. They are available very cheaply on Amazon. One of the fluids this can can test is...
Battery Removal – 450
The smart standard batteries can start giving up after 3 years so get a new one before it dies.
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...
Battery Removal – Roadster
The battery fitted at the factory is usually a 3 star unit meaning it is guaranteed for 3 years. They often last longer, especially if you look after it.
Battery Trickle Charger


If you don't use your smart that often, it's a good idea to keep the battery charged.
Batteries can be managed and topped up using a trickle charger.
Battery Upgrade
The Replacement Battery When your battery dies, do you replace with the same or get something better? You could replace the old battery for a similar type. Petrol Type 063 12 Volts 42 Amp/h Diesel Type 065 12 Volts 61 Amp/h If you are rich you can pick up one of these...
Becker Navigation Sound Aux Input
I was contacted by Derfalk from the smart-roadster-board.ch about his mod to the Navigation & Sound. This particular stereo is a re-faced Becker BE6040 that was used in other Mercedes models. There isn't an option for an auxiliary input on the back of the stereo...
Becker Sat Nav
Every you need to know about fitting a Becker sat nav to your 450 or Roadster
Beep On Lock 453
Horn Beeps When Car Is Locked If you have an American or Canadian car, chances are, your car will do this. If you want to turn this off or you have a European car and want to turn it on, follow these instructions. It worked on mine, it might work on yours. If your car...
Black Headlights – Almond
Paint the internals of the headlights to make them look better
Blind Spot Mirror
fitting blind spot mirrors to your smart
Bosch Highline Decoding
Ok, so you have a Bosch Highline stereo but don't know the security code. It's not a surprise because the security code can be changed by the user so it's rarely written down. Before you do anything, try the code 0000. That's the code from the factory and many people...
Bosch Highline Maps
Bosch Highline Map Updates This is the Bosch Highline stereo as fitted to many smart fortwo 451s from early 2010 to 2014. I have covered how much of a piece of crap it is on other pages but this will add to that. Good News Or Bad News First? Err, let's go for the good...
Bosch Highline Screen Calibration
If your touch screen isn't pressing exactly where you put your finger, you can recalibrate the screen. Press the MENU button... ...press the Extras icon... ...press the Options icon... ...select System settings... ...scroll down to Touch calibration and select it. As...
Bosch Injector Servicing
The smart 450 fortwo petrol and Roadster uses Bosch EV6 injectors and like all injectors, they eventually require cleaning. The injectors have replaceable filters that catch anything that the fuel filter lets passed. If you are removing your injectors to clean and...
Bose Bass Box Audio Wiring



So, You Bought A Cheap Bose Sub Like the one shown here, now you want to wire it up. Remove the 6x 1/4" screws to release the lid. Remove the amplifier and the speaker so they don't get damaged. Drill a 5mm hole in the bottom left corner of the amp recess. Cut...
Brabus 450 Side Spats
The first thing to know is these are disgracefully expensive. You could spend over £200 for 4. They are available from most smart dealers, I haven't seen any cheap copies yet. However, they do look good, they are the silver bits behind the front wheels and infront of...
Brabus Alloy Damage



Brabus alloys are prone to bending and corrosion which damages the lacquer, here is why and what can be done.
Brabus Handbrake Grip Fitting
Fitting the Brabus Handbrake.

