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Forum: 451 fortwo - Technical Queries

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  1. Rate my actuator!

    Hi everyone As you know I have been having some transmission issues so thought I would do a quick video of my actuator in action! Can anyone see or hear anything that suggests it needs adjusting, replacing or cleaned/lubed? Thanks Paul

    Started by Smart PB, 12th February 2019 10:52
    2 Pages
    1 2
    • Replies: 13
    • Views: 278
    17th February 2019 16:41 Go to last post
  2. Got me a Smart, it isn't well!

    Hi all So after liking the look for ages I finally took the plunge and bought one the other day. A lovely little 2009 Passion MHD 1L in grey/silver. Now that was the good bit, the bad bit is it isn't at all well! The following is a long story, long story short I think am looking for...

    Started by Smart PB, 2nd February 2019 19:26
    5 Pages
    1 2 3 ... 5
    actuator, clutch, transmission update
    • Replies: 45
    • Views: 961
    11th February 2019 22:54 Go to last post
  3. Pioneer AVIC-F930BT Sat Nav

    Does anyone know if this system is compatible with my 2012 451 Fortwo Cabrio? https://www.caraudiocentre.co.uk/product_m-pioneer-avic-f930bt_p-27101.htm#reviews I'm seriously fed up with the OEM satnav and I don't like having to use my phone as a Satnav. Edit..... Just seen this unit...

    Started by anotherbob, 3rd February 2019 12:26
    • Replies: 8
    • Views: 213
    4th February 2019 12:06 Go to last post
  4. MHD belt issue and peeling - whats my best options

    Hi, I have an '09 MHD that had a belt fix of some sort done by MB under 'Good Will' nearly three years ago. It seemed OK for about 18 months but I didn't drive it that much, in the last 18 months I've driven it more and its failure got steadily worse with the recent belt only making 2 weeks !!!...

    Started by zak99, 30th January 2019 13:40
    • Replies: 2
    • Views: 183
    30th January 2019 18:59 Go to last post
  5. Traction control light comes on and stays on until restart during motorway driving

    Seeing a strange problem with my (aged) 451 lately that I've not seen before during her 126,000 miles done so far. While driving from Manchester to London last month during driving rain on the motorway the traction control light comes on and remains lit some 100 miles or so into the journey, I...

    Started by andrewh1973, 16th January 2019 00:22
    • Replies: 9
    • Views: 347
    29th January 2019 21:17 Go to last post
  6. Seized rear brake ??

    My wife went to reverse her car this morning and it would not budge when she released the handbrake and engaged reverse. Instead the car sort of reared up and there was a burning smell appeared from somewhere. I jacked the car up to check the brakes and the first one I tried would not rotate...

    Started by mog, 21st January 2019 14:52
    2 Pages
    1 2
    • Replies: 12
    • Views: 385
    29th January 2019 12:53 Go to last post
  7. 451 fan/blower issues

    The fan on my 451 reacts badly to bumps in the road sometimes staying off until the end of the journey no matter if the ignition is recycled. I have taken the fan to pieces and cleaned the contacts, it now blows much better than before BUT is still affected by the road surface. If I jiggle...

    Started by b1ackb1rd, 20th January 2019 13:01
    • Replies: 3
    • Views: 199
    20th January 2019 18:36 Go to last post
  8. GB-10 sat nav

    Does anyone have the Pioneer f910-bt sat nav unit fitted to their 451 from the factory? I've retro-fitted this unit to my 2009 cdi, it came with leads and a 451 fascia so I know it's a dedicated Smart unit. My niggle is that the unit comes on with the ignition, that is often a real pain. ...

    Started by b1ackb1rd, 19th January 2019 10:30
    • Replies: 4
    • Views: 233
    19th January 2019 22:32 Go to last post
  9. Weird noise on start up

    Our Smart MHD has recently started to make a metallic clang noise on starting up from cold. It's literally just one clang and nothing, it runs and drives fine. I'm going to service it tomorrow and have a little look over it but I would be grateful for any input. its just ticked over 60K and...

    Started by jan_tekin, 4th January 2019 21:25
    • Replies: 5
    • Views: 359
    6th January 2019 22:11 Go to last post
  10. Flashing Yellow ECO Light

    My 2009 Model refuses to start now. Initial symptoms started about a week ago where it failed to start when coming to a stand with the MHD switched on. I had to switch engine off and on again. Also noticed that intermittently the ECO light would flash yellow a few times. Car is now refusing to...

    Started by mkrt1972, 3rd January 2019 15:57
    • Replies: 3
    • Views: 295
    4th January 2019 17:17 Go to last post
  11. fault warning light??

    451 smart 4-2 pulse I have a two spanner warning light come on with 'consult workshop' message, also gear change number flashing. servicing is up to date. anyone any ideas?

    Started by s2steamy, 5th December 2018 17:19
    consult workshop, flashing gear symbol., two spanners
    • Replies: 4
    • Views: 470
    7th December 2018 09:50 Go to last post
  12. 2010 451 84hp turbo gearbox oil change

    Morning folks. I managed to change the gearbox oil on a 451 84hp turbo a while ago, as task made much more difficult due to some sort of plastic (intercooler?) air scoop that sits right in the way of the fill plug. I couldn't see this piece on the guide I used, nor how to remove it. In one...

    Started by jonus, 5th September 2018 10:57
    • Replies: 3
    • Views: 968
    7th September 2018 00:20 Go to last post
  13. 451 cdi driveshaft

    My 2009 44hp cdi (50k) has end float on the drivers driveshaft - it moves 5mm at least. Passenger side has no float. Is this normal?

    Started by b1ackb1rd, 23rd July 2018 09:16
    2 Pages
    1 2
    • Replies: 11
    • Views: 1,267
    24th July 2018 22:25 Go to last post
  14. Hissing sound after driving

    Hi all, I went to test drive a smart for two 451 MHD 2010. After test driving, I noticed a hissing sound and water dripping from the bottom of the car. The hissing sounded like air being released from a tyre. My suspicion is that it is related to the air conditioning and is completely normal. But,...

    Started by gt86, 2nd July 2018 16:40
    • Replies: 3
    • Views: 773
    3rd July 2018 13:00 Go to last post
  15. What exactly are these?

    So just what is a fuel filter, combination filter and Poly-V-belt? http://i66.tinypic.com/25hctoh.jpg

    Started by nlel, 8th November 2017 13:02
    4 Pages
    1 2 3 ... 4
    • Replies: 39
    • Views: 6,678
    3rd July 2018 12:58 Go to last post
  16. Removing door mirror

    I need to remove the door mirror from my spare Smart for a mate tomorrow morning. It is parked in a field. Since having a heart attack I can't life my tool box. Can someone tell me what tools I need to get it off please, save me 20 trips from the cellar to the car emptying my tool box into the...

    Started by Mjolinor, 27th June 2018 19:14
    • Replies: 6
    • Views: 862
    28th June 2018 20:54 Go to last post
  17. Continental Eco Contact 5 Tyres

    Looking to buy some Continental Eco Contact 5 Tyres sometime in the future, they don't seem to make then in sizes 155/60/15 front and 175/55/15 rear which are what I currently have fitted to my Smart i.e. the Continental Eco Contact 3. What would be the next best size tyres I could fit?

    Started by nlel, 16th April 2017 11:37
    5 Pages
    1 2 3 ... 5
    • Replies: 49
    • Views: 5,915
    22nd June 2018 06:17 Go to last post
  18. Driveshaft oil seal size

    Does anyone know the dimensions of the driveshaft oil seals on 451. Regards

    Started by macbut999, 20th June 2018 10:36
    • Replies: 2
    • Views: 687
    20th June 2018 22:52 Go to last post
  19. Stutter (misfire) on a cdi

    Hi, have an annoying fault that has just started on our 2009 451 Passion CDI. Under quick acceleration the engine seems to stutter (I can only describe it as very similar to a “misfire” on a petrol car). It will run fine around the town fine but get it up to 60mph and it does the stutter (misfire)...

    Started by gaza9876, 17th June 2018 08:33
    • Replies: 3
    • Views: 722
    17th June 2018 16:15 Go to last post
  20. Just learned something new ...

    I've only had the car 2 years. I've never even noticed this clip before :icon_redf ..... 8th picture down shows a clip on the corner of the carpet. It's not very effective in use https://haynes.com/en-gb/car-manuals/smart/fourtwo/2007-2012/on-demand/10mhd-petrol/opening-bonnet

    Started by EmilysDad, 4th June 2018 17:02
    2 Pages
    1 2
    • Replies: 13
    • Views: 1,519
    5th June 2018 15:03 Go to last post

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