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Forum: 450 fortwo - Technical Queries

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  1. Exhaust manifold crack symptoms

    When accelerating from under 3000 rpm in 6th I get a jolt/judder with a dip in power.Worse going up hill. No engine light/fault codes. This has slowly got a bit worse. If I use @50% throttle it does not happen. It is less noticable in 4th or 5th . I have had my mobile connected via OBD and...

    Started by peanut, 6th June 2020 10:49
    2 Pages
    1 2
    exhaust, leak, manifold
    • Replies: 13
    • Views: 676
    26th June 2020 19:49 Go to last post
  2. Assisted steering becomes stiff once in motion

    The power steering becomes really stiff once in motion but is great when, parking and rolling from start. Is this a simple case of the motor? Brabus 2004-5 74bhp

    Started by Pocetsize, 12th April 2019 23:22
    2 Pages
    1 2
    • Replies: 17
    • Views: 3,950
    25th June 2020 08:49 Go to last post
  3. No foot brake required = Brake light switch?

    Brake light switch? ESP/Trust+ and ABS warning lights are on and I do not have to use the foot brake from neutral to drive or reverse.

    Started by Pocetsize, 1st May 2020 11:04
    brake light switch
    • Replies: 2
    • Views: 650
    4th May 2020 08:54 Go to last post
  4. Bought a 450 0.7 Brabus "Red A edition" 55.2KW / 74 HP today.

    Yup, bought today, picking up tomorrow. First off, critically I know nothing about this model, so any info on 0.7 brabus pointers to threads etc appreciated. As it has done minimal mileage the last few years we will need to fit new seals & re-gas the air con. Yokohama, bad boy wide wheels?...

    Started by Mr Gus, 16th March 2020 15:35
    4 Pages
    1 2 3 ... 4
    brabus, red a edition, smart 450
    • Replies: 34
    • Views: 2,042
    23rd April 2020 17:11 Go to last post
  5. Rear coil spring diagnosis

    The car sits about 2cm lower on one side. I've jacked both wheels off the ground and there's no obvious break in the coil spring, and both sides appear to have the same number of coils. Is the break typically not visible until you remove the spring, and are there any other reasons for a difference...

    Started by Chris3005, 25th March 2020 19:54
    2 Pages
    1 2
    • Replies: 10
    • Views: 843
    14th April 2020 14:57 Go to last post
  6. 450 Driveshaft Removal

    I need to remove the rear driveshaft on my 450 smart to install a new wheel bearing. Is the big long bolt that goes into the drive shaft a 'one use' bolt that has to be replaced? Also i need to change a front wheel bearing, is the big bolt that goes through the wheel bearing into the front...

    Started by Campsea, 18th October 2017 09:56
    2 Pages
    1 2
    • Replies: 10
    • Views: 1,723
    11th April 2020 21:03 Go to last post
  7. Brake fluid reservoir

    Can anyone advise what is involved in replacing the brake fluid reservoir on a 450, please? There are a couple of used ones on eBay, they seem to come with hoses attached. I think I'd prefer to detach the hoses at the reservoir, if that can be done, being the highest point, also I haven't seen...

    Started by Chris3005, 25th March 2020 17:24
    2 Pages
    1 2
    • Replies: 15
    • Views: 832
    9th April 2020 19:25 Go to last post
  8. Smart stalling and now won't select drive when hot

    Hi All, My 2006 450 Cabrio has a problem...any advice appreciated. A week ago it stalled for the first time when in 1st gear moving into my garage. Last Friday morning it did the same when parking up at work along with a "bunny hop/lurch" and thumping noise from the rear end. On way...

    Started by chris553, 29th January 2020 10:25
    2 Pages
    1 2
    • Replies: 13
    • Views: 1,267
    23rd March 2020 13:21 Go to last post
  9. Plug leads

    Any recommendations for replacement spark plug leads?(or ones to avoid) Need to replace at least two but will do all of them. A couple I have found https://www.carparts4less.co.uk/p/haas-ignition-lead-409915011£18.36...

    Started by peanut, 14th March 2020 19:13
    • Replies: 2
    • Views: 563
    16th March 2020 18:52 Go to last post
  10. Cannot find any info on the 2005 SILVER SMART FORTWO I-MOVE

    Anyone help out directing me to a source please? I came across one that due to bad pictures has left me puzzled, centre front of gearstick appears to have an iphone / smart phone holder??? Correct y/n ? ..what else made this a special edition?

    Started by Mr Gus, 11th March 2020 11:35
    i-move auto
    • Replies: 2
    • Views: 547
    11th March 2020 14:48 Go to last post
  11. Twitchy rear end!

    Whilst coming back from the usual drive, covering ground / roads normally travelled, we had a bit of twitch on the rear end at relatively low speeds at both roundabouts & when exiting & accelerating onto an on ramp for the motorway. Any ideas? ...is it simply a case of the wife driving harder &...

    Started by Mr Gus, 1st February 2020 14:26
    2 Pages
    1 2
    • Replies: 11
    • Views: 1,233
    3rd February 2020 17:01 Go to last post
  12. Water ingress in footwells around centre console

    Afternoon all Apologies in advance for the long read, but as you'll see, I'm confused . . . . . . so I've found water under the front carpets of the Smart - which from what I've read isn't all that unusual - but what is unusual is how it's dispersed. The majority of the water is around the...

    Started by the-chauffeur, 24th January 2019 21:18
    4 Pages
    1 2 3 ... 4
    footwell, ingress, leak, water
    • Replies: 37
    • Views: 9,054
    30th January 2020 20:21 Go to last post
  13. Any thoughts on this file? lost key synch for starters!

    Hi y'all. tried this post a while ago, not bothered keeping on top of things as had other fish to fry, so maybe now is the time? Anyone know what I ought to look into from this report? It's a back burner job, but may soon have time on my hands to look further into it. Also, best way to remove and...

    Started by jackrussel1996, 29th October 2019 09:21
    • Replies: 4
    • Views: 1,527
    25th January 2020 16:46 Go to last post
  14. Minor service after a year despite criminally low mileage ?

    Don't hate me or think me an "abuser"... My smart is "technically" now overdue a service ( small one) a year having elapsed & at around 500 miles put on in 16 months I have to ask the question. Recently had a bust spring replaced in the garage when mot'd So yes, the spanner 🔧 icon is...

    Started by Mr Gus, 8th December 2019 19:28
    2 Pages
    1 2
    • Replies: 16
    • Views: 2,221
    25th December 2019 14:51 Go to last post
  15. Key fob help!!

    Hi everyone, my spare key fob isn't working so I changed the battery and still not working. I can get in by unlocking the boot manually but the immobiliser has been on and it won't start. (Used spare key for about a month but thought I should get it sorted incase anything happens to other one)...

    Started by smartie-iow, 6th August 2018 20:22
    2 Pages
    1 2
    • Replies: 14
    • Views: 3,139
    11th November 2019 22:25 Go to last post
  16. Error log file.

    Hi y'all. tried this post a while ago, not bothered keeping on top of things as had other fish to fry, so maybe now is the time? Anyone know what I ought to look into from this report? It's a back burner job, but may soon have time on my hands to look further into it. Also, best way to remove and...

    Started by jackrussel1996, 29th October 2019 09:34
    • Replies: 2
    • Views: 1,460
    2nd November 2019 14:28 Go to last post
  17. 450 CDI not boosting

    My 450 CDI has had a replacement turbo, EGR valve and a new exhaust fitted but it is not making any boost whatsoever and I can't figure out why this might be. The actuator seems a bit stiff but apart from that, the car does appear to be running normally but severely lacking in power, meaning ~55mph...

    Started by Ocracoke, 22nd September 2019 01:56
    • Replies: 7
    • Views: 2,024
    30th October 2019 00:33 Go to last post
  18. Brabus door carded are different?

    Just been trying to swap my normal Smart 450 door card/pockets over with nicer Brabus ones, and the fittings are slightly different. The outline of the things is the same and all the other fixings fit, except the ones in the photo. Anybody come across this issue before? Just wondering the best...

    Started by Smartysmartface, 26th October 2019 13:12
    • Replies: 1
    • Views: 1,407
    27th October 2019 20:51 Go to last post
  19. Gearbox actuator?

    Mysterious gear selection problem: Car sometimes wonít go into 1st, or reverse gear and stays resolutely in neutral. Initial thought is, of course itís the clutch actuator, but the car starts - no 3 lines on the dash. Iíve recently rebuilt the engine and so I checked and greased the clutch...

    Started by Smartysmartface, 9th September 2019 12:32
    • Replies: 4
    • Views: 1,857
    10th September 2019 19:59 Go to last post
  20. 1984 synthetic engine oil

    Iíve been tidying up a wee bit and found in my shed six litres of synthetic oil from 1984. At that time synthetic oil was rather expensive and I only used this oil for winter. Drained it early May and replaced with standard mineral oil. I wonder if this old oil now is still safe to use. From...

    Started by tolsen123, 20th August 2019 22:40
    • Replies: 3
    • Views: 1,968
    21st August 2019 14:51 Go to last post

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