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Found 1 result

  1. Toyoya Link send an SMS about a message on my phone for Mayday ECU backup battery low. Changing this battery with dealer was going to cost me more than $300. hence decided to do it myself. With ideas from other posts in the forum I successfully opened the "Black box" hanging in the boot , located the battery and took it out. Reading only 5.3V against rquired 7.2V. Its a 7.2V NiCD battery. Checked online for Ni MH battery which is better. Found many options - Can buy 6 of C Size chargeable battery with tabs and solder them together or can buy assembled 6cell 7.2 V battery . Cost varying from $25 to $60 including shipping. The connection need to be taken from the old battery and soldered on to the new one. The suggestion in one of the topics that the rear seats need not be removed came out very handy. Pulled out the side panels with SRS Airbag written on them.( Not hard; Gently pulling at each plastic pin briings it out. Once both sides are removed the tray also lifts out easily. Had to do some mucking around to take the tray out as 3 sealts were coming on the way. Loosening the belt make it easy to remove the tray. Then you have another layer with padding which pulls out very easily. Now the speakers and the nuts mounting the May day ECU are exposed. 12mm ratchet spanner easily removes the 4 nuts. Now the box will hang from 2 plastic clips. Pull out the antenna plugs and other connectors by pressing their locks. One cable tie need to be cut to release the big cable bunch. Slowly slide it out of the 2 plastic clips while having some one to hold the "black box" or it will fall in the boot. Now the plastic cover holding the battery is visible held by 6 torr screws. Once the cover is removed the battery is exposed. It is made of 6 C Size chargeable cells of 1.2 V each. Dimensions roughly 140mm x 47mm x 25mm . Any chargeablel battery pack close to this dimension and rating 2.5Ah, 7.2V should do the job. original replacemnt from Toyota available for about $80 Have ordered a battery from ebay USA. Till that time I have kept the black box out. Will put it back once the battery arrive. ( Search on ebay "Onyx NiMH 6C 7.2V 2500mAh Stick Battery " See some photos below Took me about an hour to get to the battery following above steps without disturbing the back seats. The car is running with no issues with the black box out