As I said there, unless your car doesn't start at all it's tough to know if you need a new 12v battery in a Prius. We’ll be open Monday-Friday, 9am-5pm! If you haven't already, check the health of your 12v battery. Hopefully, everyone reading this knows there is more than one battery in a Toyota Prius. Discussion Starter • #1 • Feb 25, 2009. 4) Follow all steps except 3 & 5 to remove the rear covers. Because normal lead-acid batteries create small amounts of hydrogen gas during charge and discharge, the Prii use a modified version of the lead acid battery (called absorbent glass mat or AGM) that allows for better control of these fumes via a vent out the side/top of the battery as well as reducing spillage of hazardous acid in an accident (the acid is absorbed into a fiberglass lining inside the Prii’s battery case, the hallmark of AGM batteries). If you're wondering about the replacement cost of the nickel-metal hydride (Ni-MH) battery pack, we've got some bad news for you. The unique construction of the batteries means that direct replacements are available only from Toyota, and CARspec recommends only using OEM AGM 12 volt Prii batteries in practice. Torque on the 2 hold down clamp bolts = 48 in-lb (5.4 Nm or 55 kg-cm). After years of experience working for the dealerships, owner John Cleveland set out to start a new kind of shop for Toyota, Lexus and Scion owners unlike any in Minnesota – one that offers a competitive price point, technical prowess, honesty and environmentally friendly practices. OPTIMA makes direct-fit replacement batteries for many Dodge Vipers, Does your 2015 Jeep Wrangler need a replacement battery? Just loosen it and then wiggle the clamp off the battery post, circled in red. How to Replace the 12v Auxiliary Battery 2004-2009 Toyota Prius. 11) Remove the battery. Keeping your 12-volt battery fully-charged whenever possible will help maximize both performance and lifespan of your battery. All rights reserved. We’ve seen far too many stolen catalysts from the Prius,… instagram.com/p/CDUX…, Call Us Today! The vehicle was purchased new in 2012… instagram.com/p/CESD…, We’re happy to announce CARspec is now an authorized retailer and installer of Cat Security catalytic converter anti-theft shields for the 2004-2020 Prius. Optima Yellow Top DS46B24R AGM 12v battery, Follow all steps except 3 & 5 to remove the rear covers, Tape, rag or baggie to cover disconnected negative cable. Those same authorized retailers who can sell you a direct-fit OPTIMA YELLOWTOP replacement battery can also perform a load test on your current battery and most will do it for free. When reinstalling after you have the new battery situated and pushed all the way back, I did the hold down clamp bolt in the floor first, torqued it, then did the hold down clamp on the other side but didn't torque it all the way to spec as it was plenty tight. You can see any special assembly notes if you work your way back. 9) Remove the two 10mm bolts and slide the vent duct out. Next push on the release tab on the connector circled in blue, disconnect the connector then remove the brake control power assy. (952) 426-4798 Monday-Friday 9am-5pm. It comes out following the left curve of the black battery bracket. Once the negative lead is removed cover the metal in some way so that you don't accidentally short anything out. AutoZone's sturdy batteries resist vibration damage due to their patented, impact-resistant polypropylene construction. Looking at the posts above, I have also recently seen rain water in bottom 12v Battery well. Thank you. When replacing the 12 volt auxiliary starting battery it is crucial the auto mechanic or DIYer clean the throttle body of any buildup using carb cleaner.