A lady at work has recently bought an 2003 (I assume that’s a (MK2).
She said that the keyfob wasn’t working, so we replaced the battery, but then she says it still doesn’t work.
So i asked if she’s tried to lock it or pop the boot, to rule out a faulty unlock button. Guess what… she hadn’t.
So she then came back 10 minutes later and said, that it must be doing something because the lights flash (I assume indicators), but neither door will unlock with the plip.
I guess she’ll need to check the fuse for central locking or failing that, maybe both actuators have failed at some point and the previous owner never bothered getting them fixed.
Other than that, is there anything else to check on a MK2.
Incidentally, the keyfob appears to be a Mazda one.
A 2003 (registered) car is a MK2.5 (NBFL).
My May 2001 brochure for the NBFL states “Keyless entry only fitted to Sport models” That applies to standard 1.6 and 1.8 litre cars. BUT - later models may or may not have central locking, so unsure which model she has. This means she has to use the ignition key to open the doors. However, IF it does have ‘key less entry’ then the following are points to check.
Fuses to check - ROOM fuse 10 amp (red) and D.LOCK also 10 amp (red) I suspect the D.LOCK fuse has blown, as the ROOM fuse is involved with several circuits and modules and other functions would be affected if the ROOM fuse has also blown. Both fuses are in the cabin fusebox, lower dash, right hand side, pull the cover out from the top and fuse locations have markings shown on the inside of the cover, and also on the backing plate to the fuses. It’s a kneeling place to look! If either fuse has blown, then when replaced, if either fuse blows again then the car needs checking out by a competent auto electrician, preferably familiar with Mazda circuits. A blown fuse usually means a fault somewhere, so a second occurrence needs checking in detail.
If both fuses are O/K then there are other checks that can help locate the problem. Press LOCK on the key fob. The doors may have ‘double locking’ press LOCK twice and they are double locked. so the the lights should flash, and doors and boot are locked. The Alarm should also be set. You can hear the door lock mechanism work - it’s an audible Clunk. Press UNLOCK on the key fob, but don’t open any door, or boot lid and wait for at least thirty seconds, the alarm should reset, and doors relock, this means the door lock timer and keyless entry unit are working. If this doesn’t happen then either the door lock timer or key less entry module may need replacing.
Bear in mind that this only applies to models fitted with keyless entry, so hers may not have this feature. She could also have a local dealer check out her car’s equipment by giving them the cars VIN number, this will help the dealer access the OEM build of the car and what it’s equipped with.
Another point, if the ROOM and D.LOCK fuses are fitted, it doesn’t mean the car is equipped for remote locking. My fuse panel is fully equipped, but some additional circuits aren’t fitted - Air Con for example. I was told (by a man that Knows) that NBFL’s would be fitted with root wiring for all options, so being fully equipped with fuses doesn’t mean they are fully equipped. Hence the need to ascertain what the car came with.