{"id":1048,"date":"2025-04-13T14:31:11","date_gmt":"2025-04-13T12:31:11","guid":{"rendered":"https:\/\/hervelin.com\/blog\/?page_id=1048"},"modified":"2025-04-13T21:26:28","modified_gmt":"2025-04-13T19:26:28","slug":"grj120-stock-suspension-removal-details","status":"publish","type":"page","link":"https:\/\/hervelin.com\/blog\/auto-moto\/toyota-land-cruiser-j12\/grj120-stock-suspension-removal-details","title":{"rendered":"GRJ120 Stock Air suspension removal details"},"content":{"rendered":"

How to revert to a classic suspension and get rid of the TEMS?<\/h1>\n

To disable the pneumatic suspension system of your Toyota Land Cruiser Prado 120, here are the general steps:<\/p>\n

Mecanical part:<\/h2>\n

1. **Disconnect the battery**: This prevents electrical risks and ensures safe working conditions[1].<\/p>\n

2. **Disconnect the air lines**: Release the pressure from the pneumatic system to avoid dangerous projections[1].<\/p>\n

3. **Remove pneumatic components**: This includes air cushions, the compressor, and level sensors[4][7].<\/p>\n

4. **Install a traditional system**: Replace with coil springs and conventional shock absorbers, which are more reliable over time and suitable for off-road use[7].<\/p>\n

5. **Verification and adjustment**: Check wheel alignment and ensure the new system is functioning properly[5].<\/p>\n

These modifications should be carried out by a professional to ensure compliance and avoid insurance or safety issues.<\/p>\n

Sources
\n[1] DIY Grande 120 OEM Airbag replacement – Toyota Prado Forums https:\/\/www.pradopoint.com.au\/forum\/-120-series-discussion-only\/suspension-120-series\/21309-diy-grande-120-oem-airbag-replacement<\/a>
\n[2] Ressort Pneumatique Toyota Land Cruiser Prado 120 (J120) Arri\u00e8re …\u00a0https:\/\/aerosus.fr\/toyota\/land-cruiser\/land-cruiser-prado-120-j120\/ressort-pneumatique-toyota-land-cruiser-prado-120-j120-arriere-gauche.html<\/a>
\n[3] stats_fr.txt https:\/\/svn.spraakdata.gu.se\/clt\/naacl\/2015\/extract\/data\/wikipedia\/stats_fr.txt<\/a>
\n[4] [PDF] Toyota 120 Series Prado Grande – RoughTrax 4×4https:\/\/www.roughtrax4x4.com\/media\/wysiwyg\/PDF\/120_Series_Land_Cruiser_How_to_turn_off_dash_lights_after_removing_AHC.pdf<\/a>
\n[5] Suspension pneumatique Toyota Prado J120 | prix & co\u00fbt en \u00a0ligne https:\/\/www.piecesauto24.com\/accessoires-suspension-pneumatique\/toyota\/land-cruiser-kdj12-grj12<\/a>
\n[6] La tribune, jeudi 8 f\u00e9vrier 1979 – BAnQ numerique https:\/\/numerique.banq.qc.ca\/patrimoine\/details\/52327\/3682717<\/a>
\n[7] Toyota prado 120 & 150 rear suspension remove & replace – YouTube https:\/\/www.youtube.com\/watch?v=hyrJEr3VhJo<\/a>
\n[8] Comment r\u00e9soudre les probl\u00e8mes li\u00e9s aux amortisseurs de mon 120… https:\/\/aerosus.fr\/blog\/article\/how-to-fix-your-land-cruiser-prado-j120-tems-shock-issues<\/a>
\n[9] Suspension pneumatique Toyota Prado J120 3.0 D-4D 173 CV … https:\/\/www.auto-doc.fr\/pieces-detachees\/ressort-pneumatique-15148\/toyota\/land-cruiser\/land-cruiser-kdj12-grj12\/22697-3-0-d-4d-kdj120-kdj125-kdj121<\/a><\/p>\n

Electrical part:<\/h2>\n

To disable the electrical side of the pneumatic suspension system on a Toyota Land Cruiser Prado 120 after conversion to conventional springs, follow these steps:<\/p>\n

1. **Disconnect the Suspension Control Unit**: Locate the silver-colored suspension control unit near the powertrain control module. Disconnect the rearward connector to prevent the system from attempting to operate[4].<\/p>\n

2. **Remove Related Fuses and Relays**: Identify and remove the air suspension relay and associated fuses under the bonnet to cut power to the system completely[7].<\/p>\n

3. **Address Dashboard Error Lights**: If warning lights appear after disabling the system, unplugging specific modules (e.g., height control module) can resolve blinking lights on the dashboard[5].<\/p>\n

4. **Secure Unused Wiring**: Insulate or remove unused wires to prevent short circuits or interference with other systems[4][7].<\/p>\n

These steps ensure a clean electrical disconnection while maintaining vehicle functionality.<\/p>\n

Sources
\n[1] Prado 120 – switching off traction control (TRC) – 4×4 Community https:\/\/www.4x4community.co.za\/forum\/showthread.php\/323345-Prado-120-switching-off-traction-control-(TRC)<\/a>
\n[2] Stabilizer with Disconnection Mechanism (SDM) | Toyota – YouTube https:\/\/www.youtube.com\/watch?v=9P6SLEuYVRk<\/a>
\n[3] How to wire compressors for your Air Bag Suspension – YouTube https:\/\/www.roughtrax4x4.com\/media\/wysiwyg\/PDF\/120_Series_Land_Cruiser_How_to_turn_off_dash_lights_after_removing_AHC.pdf<\/a>
\n[5] How to Get Rid of Air Suspension Blinking Light | Toyota Sequoia https:\/\/www.youtube.com\/watch?v=8ARh7WjRGbI<\/a>
\n[6] How to fix a common air ride problem. Easy fix if you have a fuse that … https:\/\/www.youtube.com\/watch?v=OBSHkV6yTxw<\/a>
\n[7] Q – Air Suspension Relay under bonnet – Toyota Prado Forumshttps:\/\/www.pradopoint.com.au\/forum\/-120-series-discussion-only\/electrical-120-series\/3998-q-air-suspension-relay-under-bonnet<\/a>
\n[8] Air suspension controller – Toyota100: The Toyota Century Forum https:\/\/toyota100.com\/viewtopic.php?t=1686<\/a><\/p>\n

Rear Eibach springs details after 60000km<\/h1>\n
Sorry for the dirt \u2026 this one is off roading \r\n\"\"<\/a> \"\"<\/a> \"\"<\/a> \"\"<\/a><\/pre>\n
Pour condamner la partie \u00e9lectrique du syst\u00e8me de suspension pneumatique sur un Toyota Land Cruiser Prado 120, voici les \u00e9tapes g\u00e9n\u00e9rales \u00e0 suivre :<\/p>\n
1. **D\u00e9connecter le module de commande** : Identifiez et d\u00e9branchez l’appareil de commande de la suspension pneumatique. Cela emp\u00eache le syst\u00e8me de tenter d’activer des composants inutiles[7].<\/p>\n
2. **Isoler les relais et fusibles** : Retirez les fusibles et relais associ\u00e9s au compresseur et au syst\u00e8me pneumatique pour \u00e9viter tout fonctionnement accidentel ou court-circuit[1].<\/p>\n
3. **V\u00e9rifier les codes d’erreur** : Si le v\u00e9hicule affiche des codes d’erreur apr\u00e8s la d\u00e9sactivation, envisagez de reprogrammer l’ECU pour supprimer les alertes li\u00e9es \u00e0 la suspension.<\/p>\n
4. **S\u00e9curiser les c\u00e2bles** : Isolez ou retirez les c\u00e2bles inutilis\u00e9s pour \u00e9viter tout risque de court-circuit ou d’interf\u00e9rence avec d’autres syst\u00e8mes \u00e9lectriques.<\/p>\n
Ces op\u00e9rations doivent \u00eatre r\u00e9alis\u00e9es avec soin ou confi\u00e9es \u00e0 un professionnel qualifi\u00e9 pour garantir la s\u00e9curit\u00e9 et le bon fonctionnement global du v\u00e9hicule.<\/p>\n
Sources
\n[1] Compresseur Suspension Toyota Land Cruiser Prado 120 (J120) https:\/\/aerosus.fr\/toyota\/land-cruiser\/land-cruiser-prado-120-j120\/compresseur-suspension-toyota-land-cruiser-prado-120-j120.html
\n[2] Comment r\u00e9soudre les probl\u00e8mes li\u00e9s aux amortisseurs de mon … https:\/\/aerosus.fr\/blog\/article\/how-to-fix-your-land-cruiser-prado-j120-tems-shock-issues
\n[3] Suspension pneumatique Toyota Prado J120 3.0 D-4D 173 CV … https:\/\/www.auto-doc.fr\/pieces-detachees\/ressort-pneumatique-15148\/toyota\/land-cruiser\/land-cruiser-kdj12-grj12\/22697-3-0-d-4d-kdj120-kdj125-kdj121
\n[4] Kit de conversion de suspension pneumatique pour la s\u00e9rie Toyota … https:\/\/www.accessoires4x4-store.com\/pedders\/4024-kit-de-conversion-de-suspension-pneumatique-pour-la-serie-toyota-lc5-prado-landcruiser-120
\n[5] KDJ 120 et suspensions pneumatiques – Forum 4×4 https:\/\/www.forum4x4.org\/viewtopic.php?t=165885
\n[6] Suspension pneumatique et Land cruiser – Forum Auto – Caradisiac https:\/\/forum-auto.caradisiac.com\/topic\/114644-suspension-pneumatique-et-land-cruiser\/
\n[7] Appareil de commande, suspension pneumatique pour Toyota … https:\/\/alvadi.lu\/pieces-detachees\/toyota\/land-cruiser-fj120-2003\/appareil-de-commande-suspension-pneumatique\/
\n[8] Strong kit de suspension pour toyota land cruiser – Alibaba.com https:\/\/french.alibaba.com\/g\/suspension-kit-for-toyota-land-cruiser.html<\/p>\n","protected":false},"excerpt":{"rendered":"
How to revert to a classic suspension and get rid of the TEMS? To disable the pneumatic suspension system of your Toyota Land Cruiser Prado 120, here are the general steps: Mecanical part: 1. **Disconnect the battery**: This prevents electrical risks and ensures safe working conditions[1]. 2. **Disconnect the air lines**: Release the pressure from … Continue reading GRJ120 Stock Air suspension removal details<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":397,"menu_order":9,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1048","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/hervelin.com\/blog\/wp-json\/wp\/v2\/pages\/1048","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hervelin.com\/blog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/hervelin.com\/blog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/hervelin.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hervelin.com\/blog\/wp-json\/wp\/v2\/comments?post=1048"}],"version-history":[{"count":10,"href":"https:\/\/hervelin.com\/blog\/wp-json\/wp\/v2\/pages\/1048\/revisions"}],"predecessor-version":[{"id":1063,"href":"https:\/\/hervelin.com\/blog\/wp-json\/wp\/v2\/pages\/1048\/revisions\/1063"}],"up":[{"embeddable":true,"href":"https:\/\/hervelin.com\/blog\/wp-json\/wp\/v2\/pages\/397"}],"wp:attachment":[{"href":"https:\/\/hervelin.com\/blog\/wp-json\/wp\/v2\/media?parent=1048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}