{"product_id":"1001917820-genuine-paccar®-bms-100-battery-monitor-system-bergstrom","title":"1001917820 | Genuine Paccar® BMS-100 Battery Monitor System (Bergstrom)","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e BMS-100 Battery Monitor System (Bergstrom)\u003cbr\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003cbr\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Paccar®\u003cbr\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 1001917820\u003cspan\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eFitment Guide:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e Peterbilt, Kenworth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003eThe BMS-100 Battery Monitor System is an electronic controller used in heavy-duty trucks to monitor and manage both the starting batteries and auxiliary batteries. It's commonly found in PACCAR trucks (such as Kenworth and Peterbilt) equipped with battery-powered idle-reduction or sleeper HVAC systems.\u003cbr\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cb\u003eProtects the starting batteries.\u003c\/b\u003e It continuously monitors battery voltage and state of charge. If the batteries become too discharged, it disconnects non-essential loads so the truck still has enough power to start the engine.\u003cbr\u003e\u003cb\u003e\u003cbr\u003eManages auxiliary batteries.\u003c\/b\u003e Many trucks have a separate battery bank for sleeper accessories. The BMS-100 controls relays that connect or isolate the auxiliary batteries from the truck's charging system as needed.\u003cbr\u003e\u003cb\u003e\u003cbr\u003eSupports engine-off operation.\u003c\/b\u003e Drivers can run equipment such as:\u003cbr\u003eSleeper air conditioning (ParkSmart\/NITE systems)\u003cbr\u003eCabin heaters\u003cbr\u003eRefrigerators\u003cbr\u003eTVs\u003cbr\u003eInverters\u003cbr\u003eInterior lighting\u003cbr\u003ewithout unnecessarily draining the starting batteries.\u003cbr\u003e\u003cb\u003e\u003cbr\u003eCalculates battery health.\u003c\/b\u003e It measures:\u003cbr\u003eStarting battery voltage\u003cbr\u003eAuxiliary battery voltage\u003cbr\u003eCurrent flowing into and out of the batteries\u003cbr\u003eBattery temperature\u003cbr\u003eState of Charge (SoC)\u003cbr\u003eState of Health (SoH)\u003cbr\u003eEstimated remaining runtime for auxiliary loads.\u003cbr\u003e\u003cb\u003e\u003cbr\u003eCommunicates with the truck.\u003c\/b\u003e Using the \u003cb\u003eSAE J1939 CAN bus\u003c\/b\u003e, it reports battery status and diagnostic information to the truck's electronic control systems.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eSigns of Faulty:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp class=\"PDq2pG_selectionAnchorContainer\" data-end=\"347\" data-start=\"317\" data-section-id=\"1529se4\"\u003e\u003cstrong\u003e1. Frequent dead batteries\u003c\/strong\u003e\u003cspan class=\"PDq2pG_selectionAnchor\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-end=\"494\" data-start=\"348\"\u003e\n\u003cli data-end=\"389\" data-start=\"348\" data-section-id=\"ta2p4r\"\u003eStarting batteries discharge overnight.\u003c\/li\u003e\n\u003cli data-end=\"431\" data-start=\"390\" data-section-id=\"i3dfcz\"\u003eAuxiliary batteries won't stay charged.\u003c\/li\u003e\n\u003cli data-end=\"494\" data-start=\"432\" data-section-id=\"18l5wqh\"\u003eThe truck needs frequent jump-starts despite good batteries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"535\" data-start=\"496\" data-section-id=\"1qaeyvx\"\u003e\u003cstrong\u003e2. Sleeper accessories stop working\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"585\" data-start=\"536\"\u003eThe BMS may prematurely disconnect loads such as:\u003c\/p\u003e\n\u003cul data-end=\"677\" data-start=\"586\"\u003e\n\u003cli data-end=\"617\" data-start=\"586\" data-section-id=\"q3own9\"\u003eSleeper HVAC (ParkSmart\/NITE)\u003c\/li\u003e\n\u003cli data-end=\"632\" data-start=\"618\" data-section-id=\"18elaje\"\u003eRefrigerator\u003c\/li\u003e\n\u003cli data-end=\"643\" data-start=\"633\" data-section-id=\"1jqp4r1\"\u003eInverter\u003c\/li\u003e\n\u003cli data-end=\"661\" data-start=\"644\" data-section-id=\"yjs00l\"\u003eInterior lights\u003c\/li\u003e\n\u003cli data-end=\"677\" data-start=\"662\" data-section-id=\"17v2y6v\"\u003ePower outlets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"757\" data-start=\"679\"\u003eSometimes these accessories shut off even when the batteries are well charged.\u003c\/p\u003e\n\u003cp data-end=\"792\" data-start=\"759\" data-section-id=\"lilo9a\"\u003e\u003cstrong\u003e3. Incorrect battery readings\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"815\" data-start=\"793\"\u003eThe truck may display:\u003c\/p\u003e\n\u003cul data-end=\"963\" data-start=\"816\"\u003e\n\u003cli data-end=\"864\" data-start=\"816\" data-section-id=\"jy73cc\"\u003eLow battery warnings when batteries test good.\u003c\/li\u003e\n\u003cli data-end=\"912\" data-start=\"865\" data-section-id=\"wq0hnj\"\u003eBattery percentage that changes unexpectedly.\u003c\/li\u003e\n\u003cli data-end=\"963\" data-start=\"913\" data-section-id=\"182egsf\"\u003eIncorrect estimated runtime for auxiliary power.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"994\" data-start=\"965\" data-section-id=\"m46wuk\"\u003e\u003cstrong\u003e4. Charging system issues\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1057\" data-start=\"995\"\u003eThe BMS may fail to properly manage battery charging, causing:\u003c\/p\u003e\n\u003cul data-end=\"1221\" data-start=\"1058\"\u003e\n\u003cli data-end=\"1107\" data-start=\"1058\" data-section-id=\"m2701n\"\u003eAuxiliary batteries not charging while driving.\u003c\/li\u003e\n\u003cli data-end=\"1185\" data-start=\"1108\" data-section-id=\"1jp27i6\"\u003eStarting batteries charging normally but auxiliary batteries remaining low.\u003c\/li\u003e\n\u003cli data-end=\"1221\" data-start=\"1186\" data-section-id=\"1gmcz8u\"\u003eCharging system warning messages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1258\" data-start=\"1223\" data-section-id=\"11igh9o\"\u003e\u003cstrong\u003e5. CAN bus communication faults\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1340\" data-start=\"1259\"\u003eSince the BMS communicates over the \u003cstrong data-end=\"1316\" data-start=\"1295\"\u003eSAE J1939 CAN bus\u003c\/strong\u003e, a failure may trigger:\u003c\/p\u003e\n\u003cul data-end=\"1450\" data-start=\"1341\"\u003e\n\u003cli data-end=\"1369\" data-start=\"1341\" data-section-id=\"77ocmq\"\u003eCommunication fault codes.\u003c\/li\u003e\n\u003cli data-end=\"1407\" data-start=\"1370\" data-section-id=\"zjpce1\"\u003eLoss of battery status information.\u003c\/li\u003e\n\u003cli data-end=\"1450\" data-start=\"1408\" data-section-id=\"1rda2vv\"\u003eIntermittent warning lights or messages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1485\" data-start=\"1452\" data-section-id=\"1swinnz\"\u003e\u003cstrong\u003e6. Battery isolation problems\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1518\" data-start=\"1486\"\u003eThe battery isolation relay may:\u003c\/p\u003e\n\u003cul data-end=\"1666\" data-start=\"1519\"\u003e\n\u003cli data-end=\"1573\" data-start=\"1519\" data-section-id=\"1j6871i\"\u003eStay open when it should close, preventing charging.\u003c\/li\u003e\n\u003cli data-end=\"1666\" data-start=\"1574\" data-section-id=\"dge1nw\"\u003eStay closed when it should open, allowing auxiliary loads to drain the starting batteries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1707\" data-start=\"1668\" data-section-id=\"546btu\"\u003e\u003cstrong\u003e7. Intermittent electrical behavior\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1751\" data-start=\"1708\"\u003eSymptoms may come and go, especially after:\u003c\/p\u003e\n\u003cul data-end=\"1830\" data-start=\"1752\"\u003e\n\u003cli data-end=\"1776\" data-start=\"1752\" data-section-id=\"rgjndk\"\u003eRain or high humidity.\u003c\/li\u003e\n\u003cli data-end=\"1804\" data-start=\"1777\" data-section-id=\"1qxwr7x\"\u003eDriving over rough roads.\u003c\/li\u003e\n\u003cli data-end=\"1830\" data-start=\"1805\" data-section-id=\"rjwh6g\"\u003eChanges in temperature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eManufacturer information\u003c\/strong\u003e\u003cbr\u003eHeadquartered in Bellevue, WA, \u003cstrong\u003ePACCAR\u003c\/strong\u003e® is a Fortune 500 company specializing in heavy duty commercial vehicles. Founded in 1915 as the Pacific Car and Railway Company, PACCAR Inc grew from a small railway equipment supplier to one of the world's largest manufacturers of light, medium, and heavy duty trucks. It is a major designer and manufacturer of diesel engines and powertrain components through dealer networks in over 2,200 locations around the world. The company also operates parts distribution centers for aftermarket support that includes customer call centers operating 24 hours a day and state-of-the-art inventory management systems that speed up order processing.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003cbr\u003eFirst Truck Parts offers a \u003cstrong\u003e365-days warranty\u003c\/strong\u003e for all types of parts and in any condition. The warranty applies only to buyers who have placed an order on our website.\u003c\/p\u003e","brand":"PACCAR®","offers":[{"title":"Default Title","offer_id":48797571514612,"sku":"1001917820","price":1299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/1479\/5764\/files\/s-l1600_10_85c239aa-d050-490e-aca0-785064eb3248.webp?v=1729082522","url":"https:\/\/firsttruckparts.com\/products\/1001917820-genuine-paccar%c2%ae-bms-100-battery-monitor-system-bergstrom","provider":"First Truck Parts","version":"1.0","type":"link"}