Re-coding Meta alarms for specific vehicles

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Reprogramming Meta Alarms

If the code card is lost we are now able to re-code some Meta alarms systems. All the HPA range of alarms can also be re-coded. Alarm brains are usually located somewhere under the dash, if it cannot be located follow one of the sensor wires or the LED wire which will lead you to the control unit. The M870, M8700 & M2087 are compact alarms which means all the electronics are mounted within the siren, the complete unit needs to be sent back for re-coding. We sometimes have brand new or exchange units which can be directly swaped with your existing alarm, check here for details & stock.

The alarms that can be re-coded are: the M870, M8700, M2087, M996, M928, M99T, M99T2, M187, M871, M9-26, M826, M96E (not M96), M9601 and HPA range of alarms systems with two new fobs and a new codecard for future. If the alarm fitted to your vehicle is not listed it will not be possible to re-code it. Its is also not possible to re-code any of the motorcycle alarms which includes the Legos3, DefComT, M351, M355, M357, M357T & M357TV2.

We can reprogram the alarms listed above with two new round remotes plus a new codecard for programing more remotes in the future. 

Click here for more information & pricing

If you require reprogramming please send the alarm brain to:

Abacus Car Alarms
206 Leigham Court Road
SW16 2RB

Don't forget to include your details including your phone number. For a fast turnaround please send via next day Special Delivery (reprogramed alarm is usually returned within 48 hours - weekends will take longer)

For more information please call the office on 0208 677 1999

With the exception of the M870 alarm system which will be mounted under the bonnet (middle right), All the above alarm control ECU's will be found somewhere under the dash

For factory fitted Meta alarms see menu on the left of this page

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Quick guide to locating the Alarm Brain in your vehicle

If you are unsure of what model alarm is fitted to your vehicle it will have to be located. All Meta alarms begin with the letter 'M' followed by a number I.E. M99T or M8700 etc. Firstly look under the bonnet for the siren, once located inspect the cable coming from it, if the cable is very thin (only a few wires encased in a rubber/plastic sheath) this is just a siren and the actual alarm control brain will be hidden somewhere under the dash (known as a modular alarm).

M11/M07 siren & SC1T2 siren

The M870, M8700 & M2087 look similar to the SC1T2

If the siren has a sticker (usually found on the underside of the siren - unbolt for easier access) if the model numbers are M07, M11 or SC1T2 these are just sirens and the alarm control box will be hidden somewhere under the dash. If the siren is the SC1T2 the alarm fitted will be the M99T2.

If there are quite a few wires (or a thick cable sheath) coming from the siren this indicates it to be the actual alarm system (known as a compact alarm) on it should be a sticker with the model number, it may be necessary to unbolt the siren as the sticker is on the underside. In all cases the model number begins with the letter 'M', I.E. M870, M8700 or M2807 etc. Once found contact the office for more info.

If the vehicle is fitted with just a siren, the alarm brain will be found somewhere under the dash, the easiest way to find the unit is either follow one of the sensor wires (usually fitted either side of the windscreen pillars) or the LED wire or the siren wire which should all lead you to the unit. Again once found there should be a sticker with the model number and again in all cases begins with the letter 'M', I.E. M99 or M996 etc. The control box can vary in size roughly from a paperback book to a box a little larger than a packet of cigarettes, in all cases there will be a large number of wires, containing a dozen or more. Once found contact the office with this information.

Common Meta alarm control ECU's

We can only re-code later Meta alarms such as the M870, M8700, M2087, M996, M928, M99T, M99T2, M187, M871 and HPA range with two fobs and a new code-card, in many cases we can offer an exchange item so it will be a simple case of plug and play for replacing it.

For more information about re-coding Meta alarms Click Here

Or call the office on 0208 677 1999

More detailed guide


When sending an item (for any reason) to Abacus Car Alarms from outside the UK do not mark the package value of more than $15(US), if valued for more customs will charge import duty/tax which is non refundable & expensive.

Please mark the package as 'Item for repair' 

For more information about shipping contact the office HERE