Car Mechanics (UK)

Key fob repairs

Save cash by refurbishi­ng.

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When you are tying up the loose ends of a car deal don’t overlook one key aspect; how many of them are being handed to you? It may sound trivial at first, but in fact it can possibly render the vehicle scrap if you lose the sole survivor or it becomes irreparabl­e.

Back in the days of MGBS and Ford Cortinas, a key would typically last the lifetime of the car. But with the advent of ‘plastic fantastic’ fobs that have a touch of 007 about them, they can wear out or become damaged – like this key for a 2004 MINI Cooper S. When sourced from main dealers, new keys are costly – easily over £300 in the case of many Vauxhalls for instance. Happily, key specialist­s such as Timpsons

(found on the high street and at many supermarke­ts) can fix them for half the price. However, there’s an even cheaper solution if the old key is still working properly – a re-shell for under £50.

As the pictures show, the scruffy key for our MINI R53 is a pretty common sight among MINI owners and, as no spare was supplied when the car was purchased (a typical scenario), expensive consequenc­es were assured if it was left for much longer.

Along with MINI, other problemati­c keys are those for Vauxhalls and anything VAG related; the latter in particular where the hinge on their ‘flick out’ keys can break. According to Timpsons, 7 out of 10 suffer from this failure at some point. A specialist repairer can cater for just about every vehicle and eventualit­y, apart from relatively new vehicles whose key-related problems usually remain a dealer-only job due to replacemen­t cases not yet being available.

After checking on a tester that our MINI key was redeemable, the old shell was split open to reveal the workings, so the transfer process could begin; it’s all straightfo­rward stuff so long as you have the profession­al tools to do it.

Although you can buy replacemen­t shells on the internet, Timpsons advises that, as the quality of shells varies, it’s common for DIY customers to run into difficulti­es and end up seeking profession­al help anyway.

One of the biggest ‘kitchen table’ mistakes is to damage the immobilise­r chip when removing it from the old casing, as some are glued or soldered into place.

On the subject of soldering, many fob faults are caused by poor connection­s, especially in infra-red devices – but you can check its operation by viewing it through a smartphone camera which picks up the beam’s trace. The June 2019 edition of Car Mechanics (Help! page 77) covered this in some detail.

Depending upon the car, it may be possible to use the original key blade in the new carcass. This is a personal preference; on the one hand you have a new key, but on the other, you may possibly experience the inevitable ’new key in old lock’ syndrome with some barrels being worse than others. On the other hand, the original blade becomes a good spare for gaining access to the vehicle – it’s your call.

Extra key

If you only have a single key and want a spare, you have the option of either ordering a like-for-like duplicate, costing on average around £160, or saving about £100 by choosing an ‘emergency’ key, which is a simple fob complete with the immobilise­r chip, but not the blipper facility. It suffices, but any fitted alarm or immobilise­r will be active until the ignition is turned on to cancel it.

Apart from the assurance that the key is as good as new, a new shell is also a good selling point when off-loading your vehicle. After all, if an owner can’t be bothered to repair the key, what other results of penny-pinching are lurking?

 ??  ?? Our MINI was bought with this solitary, worn-out key.
Our MINI was bought with this solitary, worn-out key.
 ??  ?? Specialist­s such as Timpsons have an assortment of spares.
Specialist­s such as Timpsons have an assortment of spares.
 ??  ?? Removing the inners and checking the circuit for damage.
Removing the inners and checking the circuit for damage.
 ??  ?? Checking that the original key’s workings are okay.
Checking that the original key’s workings are okay.
 ??  ??
 ??  ?? This is where problems can arise, as damage may occur when removing from casing.
This is where problems can arise, as damage may occur when removing from casing.
 ??  ?? Pins and hinges are known to break. When this happens, a new casing is the only cure.
Pins and hinges are known to break. When this happens, a new casing is the only cure.
 ??  ?? It’s silly to put a failing battery back in, so this one is being checked before refitting.
It’s silly to put a failing battery back in, so this one is being checked before refitting.
 ??  ?? You may have a choice of getting a new key blade cut or reusing the original.
You may have a choice of getting a new key blade cut or reusing the original.
 ??  ?? Early Ford/jaguar ‘Tibbe’ key is a set blank key with a variety of notches ground into it.
Early Ford/jaguar ‘Tibbe’ key is a set blank key with a variety of notches ground into it.
 ??  ?? The finished item, as good as new and much cheaper than a new key from a dealer.
The finished item, as good as new and much cheaper than a new key from a dealer.
 ??  ??

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