[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-655208-105":3,"detail-sidebar-cat-0-en-105":73,"doc-detail-655208-en":122},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":66,"head_meta":68,"extra_data":70,"updated_unix":72},105,"en","g-class-electrical-systems-power-distribution-agm-vrla-battery-testing","G Class Electrical Systems - Power Distribution - AGM / VRLA Battery Testing","","Electrical training reference for G Class power distribution and battery systems, covering the layout and key components of the fuse and relay network (front/rear SAM, fuses, and relay locations). Provides detailed guidance on AGM/VRLA battery construction and properties, identification cues from labeling (VRLA) and absence of fill marks/caps, and the correct testing approach using a Midtronics MCR 717 tester. Includes testing workflow requirements for warranty documentation and references to internal WIS instructions and updated Mercedes-Benz technical publications.",{"@graph":14,"@context":65},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/g-class-electrical-systems-power-distribution-agm-vrla-battery-testing/655208/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/g-class-electrical-systems-power-distribution-agm-vrla-battery-testing/655208.png","ImageObject",300,407,{"name":42,"@type":43},"adawds","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-30","2026-10-25",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",7,{"@type":57,"mainEntity":58},"FAQPage",[59],{"name":60,"@type":61,"acceptedAnswer":62},"What must be attached when replacing a battery under warranty?","Question",{"text":63,"@type":64},"The test printout generated by the tester must be attached to the R.O., and warranty forms should record the correct test code provided by the tester.","Answer","https://schema.org",{"og:url":32,"og:type":67,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":69,"canonical":32},"index,follow",{"doc_id":71,"site_id":7},655208,1793052019,{"code":4,"msg":74,"data":75},"success",[76,80,84,88,93,97,101,106,111,114,118],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":77,"show_sort_weight":78,"slug":79},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":81,"show_sort_weight":82,"slug":83},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Exam",70,"exam",{"id":89,"doc_module":4,"doc_module_name":25,"category_name":90,"show_sort_weight":91,"slug":92},5,"Comic",60,"comic",{"id":94,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":95,"slug":96},6,50,"technology",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":98,"show_sort_weight":99,"slug":100},"Healthcare",40,"healthcare",{"id":102,"doc_module":4,"doc_module_name":25,"category_name":103,"show_sort_weight":104,"slug":105},8,"Research & Report",30,"research-report",{"id":107,"doc_module":4,"doc_module_name":25,"category_name":108,"show_sort_weight":109,"slug":110},9,"Religion & Spirituality",20,"religion-spirituality",{"id":109,"doc_module":4,"doc_module_name":25,"category_name":112,"show_sort_weight":109,"slug":113},"World Cup","world-cup",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":115,"slug":117},10,"Lifestyle","lifestyle",{"id":119,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":89,"slug":121},19,"General","general",{"code":4,"msg":74,"data":123},{"doc_id":71,"user_id":124,"nickname":42,"user_avatar":125,"doc_module":4,"category_id":94,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":126,"file_id":127,"file_url":128,"file_type":129,"file_size":130,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":131,"language":132,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":133,"faqs":134,"seo_title":135,"seo_description":12,"update_tm":136,"read_time":137},3985747872983,"https://ap-avatar.wpscdn.com/davatar_994ba38a5ba835b3df7d355c54d3ed8d","217 HO Electrical (ICC OP TF) 2-17-03  \nG Class Electrical Systems  \n1  \nThese technical training materials are current as of the date noted on the materials, and may be revised or updated without notice. Always check for revised or updated information.  \nTo help avoid personal injury to you or others, and to avoid damage to the vehicle on which you are working, you must always refer to the latest MercedesBenz Technical Publication and follow all pertinent instructions when testing, diagnosing or making repair.  \nIllustrations and descriptions in this training reference are based on preliminary information and may not correspond to the final US version vehicles. Refer to the official introduction manual and WIS when available.  \nCopyright Mercedes-Benz USA, LLC, 2003  \nReproduction by any means or by any information storage and retrieval system or translation in whole or part is not permitted without written authorization from Mercedes-Benz USA, LLC or its successors.  \nPublished by Mercedes-Benz USA, LLC Printed in U. S.A.  \nF32 -Pre-fuse box F34 -Fuse box G1 -Battery G2 -Alternator M1 -Starter N10/1-Front SAM N10/2-Rear SAM W10 -Battery ground 50 -Starter signal  \nPower Distribution  \nW10  \nM1 G1  \n50  \nF32  \nG2  \n60A  \n200A  \n200A  \n125A  \nN10/1  \nN10/1  \nF34 N10/2  \nBattery  \nBattery (G1):  \n• AGM (absorbent glass mat)  \n-12 V 90 Ah  \nPre-fuse Box (F32):  \n• Power distribution point  \n• Reduce fire risk in an accident  \n• Fuses not replaceable (replace complete assembly)  \nAGM / VRLA Battery Construction  \nThe major differences in construction between a AGM battery and standard lead acid automotive battery are:  \n• Completely sealed case construction  \n• No liquid electrolyte  \n• Absorbent glass mat (V) holds electrolyte in contact with positive and negative plates  \n• Vent valve is normally sealed no gases can escape during normal charging  \n• Vent valve is only opened if internal pressure exceeds predetermined level  \nAGM / VRLA Battery Properties  \n• Longer service life  \n• Improved cold starting characteristics  \n• Improved deep cycle performance  \n• No liquid acid spills or leaks  \n• Fast recharge time  \n• Completely maintenance free  \nHow to Identify AGM Battery:  \n• Battery label (VRLA)  \nValve Regulated Lead Acid  \n• No fill marks  \n• No fill caps  \nAGM / VRLA Battery Testing  \n• AGM batteries cannot be tested using previous methods (load and acid density tests)  \n• Requires the new Midtronics MCR 717 tester and printer  \n• Tester measures battery conductance by inducing A/C voltage of a given frequency and amplitude on the battery posts and monitoring the current flow in response to it  \n• Discard the acid density sheet, and enter test code (recorded by tester) on warranty claim forms  \n• Battery replaced under warranty must have a test printout attached to the R.O.  \n• Detailed information about testing, and using the MCR717 can be found in WIS SI54.10-P-0003-01  \n7  \nFuse & Relay Location  \nF2 Front SAM (N10/1)  \n8 7 6 5 4 3 2 1  \nI  \nL  \nP  \nS  \nM  \nQ  \nK  \nN  \nOR  \nF34  \nRelays T U V  \nRelays over  \n v   iv   iii   ii   i  rear SAM  \nA B C D E F G H  \nRear SAM (N10/2)  \nFuse and Relay Legend  \nF34 Fuse data  \n21 -DCM FL 30A  \n22 -DCM FR 30A  \n23 -Rear reading light 5A 24  \n25 -UCP / Front seat heaters 10A 26 - Illuminated door sill 7.5A  \n27 -LF ESA 30A  \n28 - Interior socket 30A 29  \n30 -HVAC blower 40A  \n31 -EIS 20A  \n32 -LR DCM 30A  \n33 -RR DCM 30A  \n34 -TELE AID 7.5A 35  \n36  \n37 -Diff. lock relay 15A  \n38 -RF ESA 30A 39 -Transfer case module 40A 40  \n41 -UCP / AC 7.5A  \n42 - Inst. cluster 7.5A  \nF2 Fuse data  \n1  \n2 -ESP / Stop lamp switch N.C. 10A 3  \n4 -Steering angle sensor / Stop lamp switch N.O.15A 5  \n6 -Rear seat heating module 20A 7 -L Auxiliary fan / Steering angle sensor 20A  \n8 -R Auxiliary fan 20ARelays (at left rear of vehicle)  \nT -Transmission output speed sensor ballast (N36) U -Tailgate central locking (K44)  \nV -Rear window wiper (K68)  \nRelays (over rear SAM)  \ni -L Auxiliary fan (K9/1)","cbCaiqUQ26G4mAOV","https://ap.wps.com/l/cbCaiqUQ26G4mAOV","pdf",2853397,36,"English","# Power Distribution\n## AGM / VRLA Battery Construction and Properties\n## How to Identify AGM Battery\n## AGM / VRLA Battery Testing\n# Fuse & Relay Location\n## Fuse and Relay Legend\n## Front SAM (N10/1) Legend\n## Relays (at left rear of vehicle)","[{\"question\":\"What must be attached when replacing a battery under warranty?\",\"answer\":\"The test printout generated by the tester must be attached to the R.O., and warranty forms should record the correct test code provided by the tester.\"}]","G Class Electrical Systems - Power Distribution - AGM / VRLA Battery Testing | PDF",1792960088,91]